Copy of Copy of MTZ 4.5 Weekly Test- Structures and Functions

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#1. Whales have a thick layer of fat called blubber under their skin. How does blubber help whales survive?

• A. It keeps them warm.
• B. It makes them too big to be eaten.
• C. It helps them swim to catch food.
• D. It makes them harder for predators to see.

#6. Many animals that live in desert ecosystems must adapt in some way to survive. Review the following adaptations, and determine which is a behavioral adaptation.

• A. Having fatty body tissue that stores water
• B. Having large ears with blood vessels near the skin to cool the body
• C. Having a cool burrow under the sand where the animal can escape the heat.
• D. Having a light-colored body covering that absorbs less heat from the environment.

#8. Which of the following is an example of a physical structure that is used for survival in the organism's environment?

• A. Layers of blubber on a walrus
• B. Whale migration to warm waters for mating
• C. Opossum playing dead to fake out predators
• D. All of the other answer choices

#13 Which statement about solutions is correct?

• A. All solutions contain more than two substances.
• B. A solution can only be created from liquids.
• C. All mixtures are solutions.
• D. All solutions are mixtures.

#3. The kit fox lives in the desert. What characteristic is most likely to help the kit fox stay cool in the desert heat and stay alert for predators?

• A. Big ears
• B. A big nose
• C. Fur on its paws
• D. A big, fury tail

#4 The roots of cacti are usually shallow and spread out widely. How does this adaptation help the plants?

• A. The roots can take in more sunlight to grow faster.
• B. The roots can get up to the surface faster to get air.
• C. The roots can collect water quickly when it rains.
• D. The roots can spread pollen faster and reproduce.

#5. The organism shown in the diagram lives in the ocean. How might it protect itself from predators and what type of behavior is this?

• A. It might wave its long tail, which is an inherited behavior.
• B. It might bury itself in the sand, which is an inherited behavior.
• C. It might go into hibernation, which is a learned behavior.
• D. It might float In the water, which is a learned behavior.

#7. The frog in the picture lives in the wetlands ecosystem. It eats insects. What special body part does the frog have that helps it to catch flies?

• A. The frog's spots helps it to catch flying insects.
• B. The frog's skin helps it to catch flying insect.
• C. The frog's sticky tongue helps to catch flying insects.
• D. The frog's webbed feet helps to catch flying insects.

#9. Compare the different species pictured below. What is the purpose of their webbed feet?

• A. Structural adaptation for survival.
• B. Behavioral adaptation for survival.
• C. Competition between species.
• D. Learned behavior of species.