Question 1

Which of the following is a defining characteristic of the phylum Cnidaria?

Accepted Answer

Radial symmetry and stinging cells

Question 2

Which animal phylum contains the largest number of described species?

Accepted Answer

Arthropoda

Question 3

A scientist discovers a new animal with a body cavity and a complete digestive tract, but no segmentation. Which phylum is this animal most likely to belong to?

Accepted Answer

Nematoda

Question 4

Which of the following best describes the function of the notochord in chordates?

Accepted Answer

It provides structural support.

Question 5

Which of the following is TRUE about mammals?

Accepted Answer

All mammals have hair and produce milk.

Question 6

Which of the following is a characteristic unique to monotremes among mammals?

Accepted Answer

They lay eggs.

Question 7

Which of the following best describes the difference between ectothermic and endothermic organisms?

Accepted Answer

Endothermic organisms regulate body temperature internally; ectothermic organisms rely on the environment.

Question 8

Which of the following is the earliest trait that distinguishes hominins from other primates?

Accepted Answer

Bipedalism

Question 9

Which of the following correctly matches the tissue type with its primary function?

Accepted Answer

Connective tissue: support and binding of other tissues

Question 10

Blood is classified as which type of tissue, and what is its matrix called?

Accepted Answer

Connective tissue; plasma

Question 11

Which of the following best describes the process of peristalsis in the digestive system?

Accepted Answer

Smooth muscle contractions that propel food through the digestive tract

Question 12

Which organ is primarily responsible for producing bile, which aids in the digestion of fats?

Accepted Answer

Liver

Question 13

A patient is unable to coordinate muscle contractions in their digestive tract, leading to difficulty moving food from the esophagus to the stomach. Which process is most likely impaired?

Accepted Answer

Peristalsis

Question 14

Which of the following is NOT a function of nervous tissue?

Accepted Answer

Contraction of muscles

Question 15

Which of the following correctly lists the order of structures that food passes through in the human digestive system?

Accepted Answer

Mouth → Esophagus → Stomach → Small intestine → Large intestine

Question 16

Which of the following statements about amphibian life cycles is correct?

Accepted Answer

Amphibians undergo metamorphosis from larval to adult stages.

Question 17

Which of the following is a correct example of a marsupial?

Accepted Answer

Kangaroo

Question 18

Which of the following best describes the structure and function of bone tissue?

Accepted Answer

Bone is a connective tissue with a hard mineral matrix and collagen for support.

Question 19

Which of the following best defines an organ system?

Accepted Answer

A group of organs that work together to perform a vital body function

Question 20

Which of the following statements about animal feeding strategies is correct?

Accepted Answer

Most animals are bulk feeders, ingesting large pieces of food.

Animal Diversity, Structure, and Digestion: Study Guide (Chapters 18–21)

Study Guide - Practice Questions

Study Guide - Flashcards