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2nd Grade Science › Life Science
What does the term mimic mean? Example: I can use a straw to mimic the beak of a hummingbird.
Imitate, copy, or impersonate
Extremely small or tiny
The theatrical technique of moving silently
A type of plant used to season food
Explanation
To mimic means to copy, impersonate, or imitate something or someone. If I want to mimic the behavior of a hummingbird and model a tool that is similar to its beak, the straw would be a good fit. It is a similar shape, size, and has the same function. I could copy or mimic a hummingbird's actions and collect liquid.
Candy and Carly's mother gave them each a daisy plant to decorate their bedrooms. Candy put her plant on the windowsill, watered it every day, and checked for flowers and new leaves sprouting. Carly put her plant on a shelf in her room near the window and watered it once or twice a week. Candy's plant had beautiful white flowers and bright green leaves. Carly's daisy has no flowers, and the leaves were wrinkled. What was the most likely reason that Carly's plant had no flowers and had wrinkly leaves?
It needed less sunlight.
It needed more water.
It needed more sunlight.
It needed less water.
Explanation
Carly's plant did not have flowers and had wrinkly leaves because it did not have enough water. Plant leaves use sunlight to help make food so they can grow and survive. It was in the sunshine, so it was able to make its food. What was missing was the water it needed to absorb nutrients from the soil. Plant roots absorb nutrients from the water and the dirt, and because it did not have enough water, it could not grow properly.
Which habitat shows the least diversity in plant species?
Explanation
The habitat that shows the least diversity in plant species is the Arctic tundra. In the other environments, there are at least one plant species, if not more. The Amazon jungle is home to nearly 80,000 plant species, and forests house a diverse population of plants as well. The grasslands only show one plant species, but depending on the area, there can be more.
Candy and Carly's mother gave them each a daisy plant to decorate their bedrooms. Candy put her plant on the windowsill, watered it every day, and checked for flowers and new leaves sprouting. Carly put her plant on a shelf in her room near the window and watered it once or twice a week. Candy's plant had beautiful white flowers and bright green leaves. Carly's daisy has no flowers, and the leaves were wrinkled. What was the most likely reason that Carly's plant had no flowers and had wrinkly leaves?
It needed less sunlight.
It needed more water.
It needed more sunlight.
It needed less water.
Explanation
Carly's plant did not have flowers and had wrinkly leaves because it did not have enough water. Plant leaves use sunlight to help make food so they can grow and survive. It was in the sunshine, so it was able to make its food. What was missing was the water it needed to absorb nutrients from the soil. Plant roots absorb nutrients from the water and the dirt, and because it did not have enough water, it could not grow properly.
What does the term mimic mean? Example: I can use a straw to mimic the beak of a hummingbird.
Imitate, copy, or impersonate
Extremely small or tiny
The theatrical technique of moving silently
A type of plant used to season food
Explanation
To mimic means to copy, impersonate, or imitate something or someone. If I want to mimic the behavior of a hummingbird and model a tool that is similar to its beak, the straw would be a good fit. It is a similar shape, size, and has the same function. I could copy or mimic a hummingbird's actions and collect liquid.
Candy and Carly's mother gave them each a daisy plant to decorate their bedrooms. Candy put her plant on the windowsill, watered it every day, and checked for flowers and new leaves sprouting. Carly put her plant on a shelf in her room near the window and watered it once or twice a week. Candy's plant had beautiful white flowers and bright green leaves. Carly's daisy has no flowers, and the leaves were wrinkled. What was the most likely reason that Carly's plant had no flowers and had wrinkly leaves?
It needed less sunlight.
It needed more water.
It needed more sunlight.
It needed less water.
Explanation
Carly's plant did not have flowers and had wrinkly leaves because it did not have enough water. Plant leaves use sunlight to help make food so they can grow and survive. It was in the sunshine, so it was able to make its food. What was missing was the water it needed to absorb nutrients from the soil. Plant roots absorb nutrients from the water and the dirt, and because it did not have enough water, it could not grow properly.
Humans do not know about animal diversity, and it cannot be studied in different habitats.
True
False
Explanation
In each habitat, there are diverse groups of animals based on living conditions. For example, in a cold-weather habitat, the animals have to be adapted to live in that weather. There are similarities between some of the animals living in each habitat, but across the different habitats, there is great diversity. Humans can study these habitats and take note of the different species to decide how diverse an area is.
Which habitat shows the least diversity in plant species?
Explanation
The habitat that shows the least diversity in plant species is the Arctic tundra. In the other environments, there are at least one plant species, if not more. The Amazon jungle is home to nearly 80,000 plant species, and forests house a diverse population of plants as well. The grasslands only show one plant species, but depending on the area, there can be more.
Humans do not know about animal diversity, and it cannot be studied in different habitats.
True
False
Explanation
In each habitat, there are diverse groups of animals based on living conditions. For example, in a cold-weather habitat, the animals have to be adapted to live in that weather. There are similarities between some of the animals living in each habitat, but across the different habitats, there is great diversity. Humans can study these habitats and take note of the different species to decide how diverse an area is.
Animals disperse (or spread) the seeds of plants they eat. Seeds exit the digestive system of a bat while they are flying around eating fruit from different plants. When the seeds land on the ground, new plants may be formed. How can humans mimic the bat and disperse seeds?
Throw seeds out of a car window while driving
Put seeds in a pond in your yard
Eat seedless watermelon at a picnic
Roast pumpkin seeds to use in trail mix
Explanation
If humans want to develop a model for mimicking a bat dispersing seeds, the best answer choice would be to throw seeds out of a car window while driving. By tossing the seeds, it gives the change for a new plant to grow when they land in the dirt outside of the car. Humans can create models and devices to mimic animals that help keep new plants growing.