Question 1

Which of the following best explains why seals, penguins, and tuna have similar streamlined body shapes, despite being unrelated species?

Accepted Answer

Convergent evolution led to similar adaptations due to similar environmental challenges.

Question 2

Which physical law most directly limits the maximum size of fast-swimming aquatic animals?

Accepted Answer

The laws governing diffusion and movement through water

Question 3

In a multicellular animal, why are specialized internal exchange surfaces necessary?

Accepted Answer

Because the rate of exchange is proportional to surface area, and complex animals need more surface area for exchange

Question 4

Which organ system is responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Circulatory system

Question 5

Which tissue type is responsible for transmitting electrical impulses in animals?

Accepted Answer

Nervous tissue

Question 6

Which of the following is a function of the basal surface of epithelial tissue?

Accepted Answer

It faces the basement membrane and provides structural support.

Question 7

Which connective tissue type stores fat and insulates the body?

Accepted Answer

Adipose tissue

Question 8

Which muscle tissue type is responsible for involuntary contraction of the heart?

Accepted Answer

Cardiac muscle

Question 9

Which system is best adapted for coordinating gradual changes such as growth and development?

Accepted Answer

Endocrine system

Question 10

A river otter maintains a stable body temperature across a wide range of environmental temperatures. This is an example of:

Accepted Answer

Regulating

Question 11

Which feedback mechanism is primarily responsible for maintaining homeostasis in animals?

Accepted Answer

Negative feedback

Question 12

Which of the following is an example of positive feedback in animals?

Accepted Answer

Oxytocin stimulating uterine contractions during childbirth

Question 13

Which adaptation is NOT a method used by animals to balance heat loss and gain?

Accepted Answer

Photosynthesis

Question 14

Which process describes the transfer of heat from a lizard’s body to a rock it is sitting on?

Accepted Answer

Conduction

Question 15

Why is endothermy more energetically expensive than ectothermy?

Accepted Answer

Endotherms generate heat by metabolism to maintain a stable body temperature.

Question 16

Which of the following is a circulatory adaptation that helps reduce heat loss in marine mammals?

Accepted Answer

Countercurrent heat exchange

Question 17

Which tissue type is characterized by cells that are closely packed and function as a barrier?

Accepted Answer

Epithelial tissue

Question 18

Which of the following best describes the role of brown adipose tissue in thermoregulation?

Accepted Answer

It produces heat through nonshivering thermogenesis.

Question 19

A lizard moves into the sun to warm up and then into the shade to cool down. This is an example of:

Accepted Answer

Behavioral thermoregulation

Question 20

Which of the following equations correctly represents the relationship between the rate of exchange and surface area in animal cells?

Accepted Answer

$$Rate\ of\ exchange \propto Surface\ Area$$

Basic Principles of Animal Form and Function

Study Guide - Practice Questions