5th Grade Science Quiz: Plants Store Sunlight Energy
20 questions · exam conditions
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Plants Store Sunlight EnergyQuestion 1 of 20

The energy from sunlight is stored in plants as what kind of energy in food?

chemical energy in sugar and starch
electrical energy in plant cells
light energy trapped in chlorophyll
heat energy held in the leaves
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5th Grade Science Quiz

5th Grade Science Quiz: Plants Store Sunlight Energy

Practice Plants Store Sunlight Energy in 5th Grade Science with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Plants Store Sunlight Energy, giving you a quick way to practice the rules, question types, and explanations that matter most for 5th Grade Science.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

The energy from sunlight is stored in plants as what kind of energy in food?

  1. chemical energy in sugar and starch (correct answer)
  2. electrical energy in plant cells
  3. light energy trapped in chlorophyll
  4. heat energy held in the leaves
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy as chemical energy in sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice C fails because it suggests chlorophyll stores energy, when chlorophyll captures light but the energy is stored in sugar molecules. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Watch for: Students who think energy stays as light, or who confuse materials (water, chlorophyll) with stored energy. Reinforce: 'Light energy IN → chemical energy stored in food OUT.'

Question 2

According to the explanation, how is sunlight energy stored as sugar or starch in plants?

  1. as heat trapped inside the plant
  2. as chemical energy in sugar and starch (correct answer)
  3. as light energy held in the leaves
  4. as energy stored in the water inside
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice B is correct because it accurately describes that plants store energy as chemical energy in sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice A fails because it claims energy is stored as heat, when the stored form is chemical energy in food molecules. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Ask: 'Where did the energy in this carrot come from?' Trace backwards: 'Energy in carrot ← made by carrot plant ← using sunlight ← sunlight came from sun. So the energy you get from eating a carrot originally came from the sun!'

Question 3

According to the model, what form does the sun's energy take in plants?​​​

  1. chemical energy stored in sugar and starch food (correct answer)
  2. light energy stored unchanged inside the leaves
  3. heat energy stored in stems and roots
  4. electrical energy stored in plant veins
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't keep it as light—they transform it into a different form that can be stored. During photosynthesis, plants use light energy to make sugar molecules. The energy from sunlight is now stored in the chemical bonds of the sugar—this is called chemical energy. Plants also convert some sugar into starch for long-term storage. The key point: the sun's energy changes form from light to chemical energy stored in food molecules. Choice A is correct because it accurately identifies that the sun's energy takes the form of chemical energy stored in sugar and starch food. This demonstrates understanding of energy transformation—light energy becomes chemical energy in food molecules. Choice B fails because it claims light energy is stored unchanged, when light must be converted to be stored. Choice C fails because it states energy becomes heat in stems and roots, when the stored form is chemical energy in food. Choice D fails because it suggests electrical energy in plant veins, which is not how plants store energy. To help students understand: Draw an energy transformation diagram with arrows: Sun (light energy) → Plant leaf (captures light) → Sugar molecule (chemical energy). Ask: 'Can you store sunlight in a jar? No! But plants change light into sugar, which CAN be stored.' Use concrete examples: 'The energy in a potato came from the sun, but it's not stored as light—it's stored as starch (chemical energy).'

Question 4

The model shows plants store energy by moving sugar to which plant parts?​

  1. to leaves, roots, stems, fruits, and seeds (correct answer)
  2. to the soil so it can hold the energy
  3. to chlorophyll where the energy stays forever
  4. to leaf air pockets where light is stored
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. The model shows that after plants make sugar through photosynthesis, they transport it through their vascular system to various parts for storage: leaves store sugar for immediate use, roots store it as starch (like in carrots), stems can store it (like in potatoes), fruits store it to attract animals for seed dispersal, and seeds store it to fuel germination. Choice A is correct because it identifies all major plant parts where sugar can be transported and stored, demonstrating understanding of energy distribution throughout the plant. Choices B, C, and D fail because soil doesn't store plant energy; chlorophyll captures but doesn't store energy; and air pockets don't store light—only sugar and starch molecules in plant tissues store energy.

Question 5

How do plants store sunlight energy so they can use it later?​

  1. by storing it as light in the leaves
  2. by storing it as food sugar and starch (correct answer)
  3. by storing it as water inside the stem
  4. by storing it as heat in the roots
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. Plants capture sunlight energy during photosynthesis and transform it into sugar molecules, where the energy is stored in chemical bonds. This sugar (and starch made from sugar) serves as the plant's energy storage system—like a battery that can be used later when the plant needs energy for growth, reproduction, or survival during times without sunlight. Choice B is correct because it identifies that plants store sunlight energy as food (sugar and starch), demonstrating understanding that energy must be converted to a storable chemical form. Choices A, C, and D fail because light, water, and heat cannot be stored for later use—only the chemical bonds in food molecules provide a stable, accessible form of stored energy.

Question 6

The model shows plants store energy by moving sugar to which plant parts?

  1. to leaves, roots, stems, fruits, and seeds (correct answer)
  2. to the soil so it can hold the energy
  3. to chlorophyll where the energy stays forever
  4. to leaf air pockets where light is stored
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. The model shows that after plants make sugar through photosynthesis, they transport it through their vascular system to various parts for storage: leaves store sugar for immediate use, roots store it as starch (like in carrots), stems can store it (like in potatoes), fruits store it to attract animals for seed dispersal, and seeds store it to fuel germination. Choice A is correct because it identifies all major plant parts where sugar can be transported and stored, demonstrating understanding of energy distribution throughout the plant. Choices B, C, and D fail because soil doesn't store plant energy; chlorophyll captures but doesn't store energy; and air pockets don't store light—only sugar and starch molecules in plant tissues store energy.

Question 7

The model says leaves capture light energy; plants store it by making what?

  1. water stored in roots and stems for later
  2. oxygen stored in leaf air spaces for later
  3. sugar that can be turned into starch later (correct answer)
  4. light stored in green chlorophyll for later
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When leaves capture light energy during photosynthesis, plants use this energy to make sugar molecules. The sugar contains the energy in its chemical bonds and can be used immediately or converted to starch for long-term storage. Different plants store this energy-rich food in different places: leaves, roots, stems, fruits, or seeds. Choice C is correct because it identifies sugar as what plants make to store the captured light energy, and mentions that sugar can be turned into starch later for long-term storage. Choice A fails because water is used in photosynthesis but doesn't store energy—it's a raw material, not an energy storage molecule. Choice B fails because oxygen is a waste product of photosynthesis, not an energy storage compound. Choice D fails because chlorophyll captures light but doesn't store it—the energy is transferred to sugar molecules. To teach this: Show students a potato (stored starch) and explain it started as sugar made in leaves. Trace the path: sunlight → captured by chlorophyll → used to make sugar → sugar travels to potato → converted to starch for storage.

Question 8

How do plants store the energy they capture from sunlight for later use?

  1. by storing chemical energy as sugar or starch (correct answer)
  2. by storing light energy inside leaf air spaces
  3. by storing heat energy in stems and roots
  4. by storing energy in soil near the roots
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy by storing chemical energy as sugar or starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice B fails because it claims energy is stored as light, when light energy is converted to chemical energy in food. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Emphasize two key points: (1) Energy changes form from light to chemical, and (2) Energy is stored IN the food (sugar/starch), not in water, chlorophyll, or other plant parts.

Question 9

Where do plants store energy after making sugar in the leaves?​​​

  1. in air pockets inside leaves and stems
  2. only in roots, never in other plant parts
  3. in leaves, roots, stems, fruits, and seeds (correct answer)
  4. in chlorophyll, which holds the energy forever
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. After plants make sugar in their leaves during photosynthesis, they transport and store this energy-rich food throughout the plant. Different plants store energy in different parts: lettuce stores it in leaves, carrots store it in roots, potatoes store it in underground stems, apples store it in fruits, and corn stores it in seeds. The sugar (and starch made from sugar) can be stored wherever the plant needs energy for growth or wherever it saves energy for reproduction or surviving winter. Choice C is correct because it accurately identifies that plants store energy in leaves, roots, stems, fruits, and seeds. This demonstrates understanding that energy storage occurs throughout the plant in various organs, not just in one location. Choice A fails because it claims energy is stored in air pockets, when energy is stored in food molecules within plant tissues. Choice B fails because it states storage occurs only in roots, when many plant parts store energy. Choice D fails because it suggests chlorophyll holds energy forever, when chlorophyll captures light but energy is stored in sugar and starch molecules. To help students understand: Use familiar foods to show energy storage locations—'Where does a carrot store energy? (root) An apple? (fruit) Corn? (seed) Lettuce? (leaves) Potato? (underground stem).' Create a plant diagram labeling where different plants store their energy-rich food. Emphasize that the energy is IN the food molecules (sugar/starch), which can be stored in many different plant parts.

Question 10

How do plants store the energy they capture from sunlight for later use?​

  1. by storing chemical energy as sugar or starch (correct answer)
  2. by storing light energy inside leaf air spaces
  3. by storing heat energy in stems and roots
  4. by storing energy in soil near the roots
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy by storing chemical energy as sugar or starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice B fails because it claims energy is stored as light, when light energy is converted to chemical energy in food. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Emphasize two key points: (1) Energy changes form from light to chemical, and (2) Energy is stored IN the food (sugar/starch), not in water, chlorophyll, or other plant parts.

Question 11

How do plants store energy from sunlight in foods we eat, like fruits and roots?

  1. as chemical energy in sugars and starches (correct answer)
  2. as light energy trapped in the fruit skin
  3. as energy stored in water inside the plant
  4. as energy stored in soil around the plant
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Different plants store this energy-rich food in different places: lettuce stores it in leaves, carrots store it in roots, potatoes store it in underground stems, apples store it in fruits, and corn stores it in seeds. Choice A is correct because it accurately describes that plants store energy as chemical energy in sugars and starches. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice C fails because it states energy is stored in water, when water is used in photosynthesis but doesn't store energy. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Ask: 'Where did the energy in this carrot come from?' Trace backwards: 'Energy in carrot ← made by carrot plant ← using sunlight ← sunlight came from sun. So the energy you get from eating a carrot originally came from the sun!'

Question 12

According to the model, where can plants store food energy made from sunlight?​

  1. only in the roots of the plant
  2. in leaves, roots, stems, fruits, and seeds (correct answer)
  3. only in the green chlorophyll in leaves
  4. in the water inside plant cells
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Different plants store this energy-rich food in different places: lettuce stores it in leaves, carrots store it in roots, potatoes store it in underground stems, apples store it in fruits, and corn stores it in seeds. Choice B is correct because it accurately describes that plants store energy in leaves, roots, stems, fruits, and seeds as sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice D fails because it states energy is stored in water, when water is used in photosynthesis but doesn't store energy. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Ask: 'Where did the energy in this carrot come from?' Trace backwards: 'Energy in carrot ← made by carrot plant ← using sunlight ← sunlight came from sun.'

Question 13

The model says leaves capture light energy; plants store it by making what?​​

  1. water stored in roots and stems for later
  2. oxygen stored in leaf air spaces for later
  3. sugar that can be turned into starch later (correct answer)
  4. light stored in green chlorophyll for later
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When leaves capture light energy during photosynthesis, plants use this energy to make sugar molecules. The sugar contains the energy in its chemical bonds and can be used immediately or converted to starch for long-term storage. Different plants store this energy-rich food in different places: leaves, roots, stems, fruits, or seeds. Choice C is correct because it identifies sugar as what plants make to store the captured light energy, and mentions that sugar can be turned into starch later for long-term storage. Choice A fails because water is used in photosynthesis but doesn't store energy—it's a raw material, not an energy storage molecule. Choice B fails because oxygen is a waste product of photosynthesis, not an energy storage compound. Choice D fails because chlorophyll captures light but doesn't store it—the energy is transferred to sugar molecules. To teach this: Show students a potato (stored starch) and explain it started as sugar made in leaves. Trace the path: sunlight → captured by chlorophyll → used to make sugar → sugar travels to potato → converted to starch for storage.

Question 14

How do plants store sunlight energy so they can use it later?

  1. by storing it as light in the leaves
  2. by storing it as food sugar and starch (correct answer)
  3. by storing it as water inside the stem
  4. by storing it as heat in the roots
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. Plants capture sunlight energy during photosynthesis and transform it into sugar molecules, where the energy is stored in chemical bonds. This sugar (and starch made from sugar) serves as the plant's energy storage system—like a battery that can be used later when the plant needs energy for growth, reproduction, or survival during times without sunlight. Choice B is correct because it identifies that plants store sunlight energy as food (sugar and starch), demonstrating understanding that energy must be converted to a storable chemical form. Choices A, C, and D fail because light, water, and heat cannot be stored for later use—only the chemical bonds in food molecules provide a stable, accessible form of stored energy.

Question 15

Plants convert light energy from the sun into what stored form during photosynthesis?

  1. chemical energy stored as sugar and starch (correct answer)
  2. light energy stored in leaf air pockets
  3. energy stored as oxygen in the air
  4. energy stored as heat in the stem
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy as chemical energy stored as sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice C fails because it states energy is stored as oxygen in the air, when oxygen is a byproduct of photosynthesis but doesn't store energy. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Emphasize two key points: (1) Energy changes form from light to chemical, and (2) Energy is stored IN the food (sugar/starch), not in water, chlorophyll, or other plant parts.

Question 16

According to the explanation, plants change sunlight into stored energy by making what?

  1. sugar first, then sometimes starch for long‑term storage (correct answer)
  2. chlorophyll, which stores the sun's energy permanently
  3. water, which holds sunlight energy inside the plant
  4. heat, which stays inside the plant as stored energy
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored; during photosynthesis, plants use light energy to make sugar (a type of food), and the sugar molecules store the energy in their chemical bonds—this is called chemical energy, with some sugar used right away for growth and much stored as starch for later use in various plant parts like leaves, roots, stems, fruits, and seeds. Choice A is correct because it accurately describes that plants change sunlight into stored energy by making sugar first, then sometimes starch for long-term storage, demonstrating understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice B fails because it suggests chlorophyll stores energy, when chlorophyll captures light but the energy is stored in sugar molecules; energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in chlorophyll. To help students understand energy storage in plants, use food examples they eat like potatoes (stores energy in underground stems), carrots (in roots), apples (in fruits), corn (in seeds), and lettuce (in leaves), and ask 'Where did the energy in this carrot come from?' while tracing backwards from the sun; demonstrate with an energy flow diagram showing Sun (light energy) → Plant captures light → Plant makes sugar → Sugar stores chemical energy → Stored in plant parts, emphasizing energy changes from light to chemical and is stored in food molecules, not in water, chlorophyll, light, or heat.

Question 17

According to the explanation, how is sunlight energy stored as sugar or starch in plants?​​

  1. as heat trapped inside the leaves and stems
  2. as chemical energy in sugar and starch plant food (correct answer)
  3. as light saved inside the leaves all day
  4. as electrical energy moving through plant cells
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light or heat—they transform it into chemical energy. During photosynthesis, plants use light energy to make sugar, and the sugar molecules store the energy in their chemical bonds. This sugar can then be converted to starch for long-term storage. Choice B is correct because it accurately describes that plants store sunlight energy as chemical energy in sugar and starch plant food, demonstrating understanding that energy changes form from light to chemical. Choice A fails because heat is not how plants store energy—while some heat is produced, the energy is stored in chemical bonds. Choice C fails because light cannot be saved or stored inside leaves—light energy must be converted to be stored. Choice D fails because plants don't use electrical energy for storage. To help students: Use a flashlight and battery analogy—you can't store light from a flashlight, but a battery stores chemical energy that can make light later. Similarly, plants can't store sunlight directly but convert it to chemical energy in food.

Question 18

The energy from sunlight is stored in plants as what kind of energy in food?​

  1. chemical energy in sugar and starch (correct answer)
  2. electrical energy in plant cells
  3. light energy trapped in chlorophyll
  4. heat energy held in the leaves
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy as chemical energy in sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice C fails because it suggests chlorophyll stores energy, when chlorophyll captures light but the energy is stored in sugar molecules. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Watch for: Students who think energy stays as light, or who confuse materials (water, chlorophyll) with stored energy. Reinforce: 'Light energy IN → chemical energy stored in food OUT.'

Question 19

Plants convert light energy from the sun into energy stored as what?​​​

  1. chemical energy in sugar, sometimes changed into starch (correct answer)
  2. heat energy kept warm inside the plant
  3. light energy saved in leaves like a flashlight
  4. oxygen gas stored in plant parts as fuel
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. During photosynthesis, plants capture light energy from the sun and use it to make sugar molecules. The light energy doesn't stay as light—it's converted into chemical energy stored in the bonds of sugar molecules. Plants often convert some of this sugar into starch (many sugar molecules connected together) for more efficient long-term storage. The key transformation: light energy from the sun becomes chemical energy in sugar, which can be changed into starch. Choice A is correct because it accurately describes that plants convert light energy into chemical energy in sugar, sometimes changed into starch. This demonstrates understanding of the energy transformation from light to chemical form and that both sugar and starch are storage molecules. Choice B fails because it claims energy is stored as heat kept warm, when the stored form is chemical energy in food molecules. Choice C fails because it states light energy is saved like a flashlight, when light must be converted to chemical energy to be stored. Choice D fails because it suggests oxygen gas is stored as fuel, when oxygen is a byproduct and energy is stored in sugar/starch. To help students understand: Draw the energy conversion—Sun (light) → Leaf (captures light) → Sugar (chemical energy) → Starch (chemical energy for long-term storage). Ask: 'Why do we eat food for energy? Because food like sugar and starch contains chemical energy!' Emphasize the transformation: 'Plants are energy converters—they change light energy into chemical energy we can eat.'

Question 20

Plants convert light energy from the sun into what stored form during photosynthesis?​

  1. chemical energy stored as sugar and starch (correct answer)
  2. light energy stored in leaf air pockets
  3. energy stored as oxygen in the air
  4. energy stored as heat in the stem
Explanation: This question tests the ability to use models to explain how plants store energy from sunlight in food (NGSS 5-PS3-1). Students must understand that light energy is converted to chemical energy stored in plant food. When plants capture light energy from the sun, they don't store it as light—they transform it into a different form of energy that can be stored. During photosynthesis, plants use light energy to make sugar (a type of food). The sugar molecules store the energy in their chemical bonds—this is called chemical energy. Some sugar is used right away by the plant for growth, but much of it is stored for later use, either as sugar or as starch (starch is made from many sugar molecules connected together, and is good for long-term storage). Choice A is correct because it accurately describes that plants store energy as chemical energy stored as sugar and starch. This demonstrates understanding that energy is stored in a usable form (food molecules) in various parts of the plant, and that the stored form is chemical energy, not light or heat. Choice C fails because it states energy is stored as oxygen in the air, when oxygen is a byproduct of photosynthesis but doesn't store energy. Energy must be stored in a stable form that can be used later—sugar and starch molecules store energy in chemical bonds, not in water, chlorophyll, light, or heat. To help students understand energy storage in plants: Use food examples they eat—potato (stores energy in underground stem), carrot (stores in root), apple (stores in fruit), corn (stores in seeds), lettuce (stores in leaves). Emphasize two key points: (1) Energy changes form from light to chemical, and (2) Energy is stored IN the food (sugar/starch), not in water, chlorophyll, or other plant parts.