Structure and Function in Plants and Animals

How do adaptations help animals?

• helps them hide from predators
• helps them hunt for food
• helps them survive in their habitat
• All of these are correct.

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What is the most likely reason why animals in hot climates have larger ears than similar animals in cold climates?

• It is more difficult to hear in hot air, so bigger ears are needed.

• Big ears lose heat quickly, while small ears lose heat slowly.

• Big ears help animals in hot climates camouflage better.

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NGSS.MS-LS4-4

What is one possible reason for seeds to have hooks or barbs?

• to stay warm during the winter

• for catch sunlight

• to get attached to passing animals and get carried away

• to be easier for animals to eat them

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A cactus can live in the desert because of this adaptation:

• wide flat leaves to catch water

• shallow roots

• thick, waxy skin help it store water

• tendrils to reach sunlight

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Animals such as elephants and walruses have tusks. How do tusks help the animal?

• Tusks help them swim.
• Tusks help them camouflage.
• Tusks look pretty to other animals.
• Tusks protect the animal when fighting.

A Bittern bird and the Key deer both live in Florida. The bird blends with its environment in the tall sawgrass and freezes when it feels threatened and points its head into the air to imitate the sawgrass.  The Key deer  lives in the forests, is brown and freezes when it senses danger.  What adaptations are similar between these two animals?

• They both blend in their environment and they don't move.
• They both huddle together in other groups of animals to blend in.
• They both use their small size to hide from predators.
• They both use their speed to escape predators.

Animals help seeds travel by _________.

• eating seeds and dropping waste later on

• hiding seeds in the winter and not coming back for them

• catching seeds on their fur and carrying them to different places

• all of the above

Which would make the BEST model for the beak of a bird that eats seeds from the ground?

• dropper
• strainer
• spoon
• tweezers

Why might some plants have thorns?

• to stay safe from animals that want to eat the plant
• to attract insects that spread pollen to other plants
• to take in nutrients from the air
• to provide shade for the plant

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NGSS.MS-LS4-4

The rain forest is very thick so not much sunlight reaches plants on the forest floor. So some plants will -

• have spikes to discourage animals from eating them.

• climb on other plants to reach sunlight.

• be covered in hair to keep them warm.

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