Topic 8 Lesson 3 Quiz

Animals have different ways of keeping their bodies at a normal temperature. A Ectotherm, for instance, a goldfish and a snake:

• uses the environment to maintain body temperature

• uses stored body energy to maintain body temperature

• uses energy from eating another animal to maintain body temperature

Animals have different ways of keeping their bodies at a normal temperature. Endotherms, such as a robin or a rabbit:

• uses the environment to maintain body temperature

• uses energy from eating other animals to maintain body temperature

• uses stored body energy to maintain body temperature

Use the information below to answer the next three questions.

Pocket mice are small, nocturnal mammals. They are mainly herbivores that feed on the seeds of various grasses and shrubs. If food is very scarce, they will feed on insects. A typical daily diet for an adult male pocket mouse is 5 grams of food and 3 to 5 milliliters of fluid. Some other facts about this small animal are listed in the table. According to the passage, how does a pocket mouse typically get the energy it needs?

• It makes its own food using the energy of the sun.

• It eats small animals that it hunts.

• It feeds on the leaves of large trees.

• It feeds on seeds that plants make.

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How does the pocket mouse maintain its body temperature? Select the two that apply.

• It is an endotherm.

• It is an ectotherm.

• It uses energy stored in its body to stay warm.

• It uses energy from the environment to stay warm.

The animal shown in the picture is a sloth. Animal experts agree that the sloth has a slow metabolism. What is meant by the word metabolism?

• chemical processes that break down and build molecules in an organism

• using energy in the body to keep temperatures normal

• using the environment to keep body temperatures normal

• a chemical process in which an organism makes its own food

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