Animal Form and Function

Review Questions

Which type of animal maintains a constant internal body temperature?

  1. endotherm
  2. ectotherm
  3. coelomate
  4. mesoderm

Hint:

A

The symmetry found in animals that move swiftly is ________.

  1. radial
  2. bilateral
  3. sequential
  4. interrupted

Hint:

B

What term describes the condition of a desert mouse that lowers its metabolic rate and “sleeps” during the hot day?

  1. turgid
  2. hibernation
  3. estivation
  4. normal sleep pattern

Hint:

C

A plane that divides an animal into equal right and left portions is ________.

  1. diagonal
  2. midsagittal
  3. coronal
  4. transverse

Hint:

B

A plane that divides an animal into dorsal and ventral portions is ________.

  1. sagittal
  2. midsagittal
  3. coronal
  4. transverse

Hint:

D

The pleural cavity is a part of which cavity?

  1. dorsal cavity
  2. thoracic cavity
  3. abdominal cavity
  4. pericardial cavity

Hint:

B

How could the increasing global temperature associated with climate change impact ectotherms?

  1. Ectotherm diversity will decrease in cool regions.
  2. Ectotherms will be able to be active all day in the tropics.
  3. Ectotherms will have to expend more energy to cool their body temperatures.
  4. Ectotherms will be able to expand into new habitats.

Hint:

D

Although most animals are bilaterally symmetrical, a few exhibit radial symmetry. What is an advantage of radial symmetry?

  1. It confuses predators.
  2. It allows the animal to gather food from all sides.
  3. It allows the animal to undergo rapid, purposeful movement in any direction.
  4. It lets an animal use its dorsal surface to sense its environment.

Hint:

B