Question 1

Which of the following is a key derived trait that distinguishes amniotes from other tetrapods?

Accepted Answer

Amniotic egg with specialized membranes

Question 2

During the Cambrian explosion, which of the following evolutionary milestones first appeared in the animal lineage?

Accepted Answer

Emergence of large, hard-bodied animals

Question 3

Which of the following best describes the function of the aorta in the mammalian cardiovascular system?

Accepted Answer

It distributes oxygenated blood from the left ventricle to the body.

Question 4

Which of the following is an example of negative feedback in human physiology?

Accepted Answer

Regulation of blood glucose by insulin and glucagon

Question 5

Which animal group is characterized by a segmented body, jointed appendages, and a hard exoskeleton?

Accepted Answer

Arthropods

Question 6

Which of the following best describes the difference between open and closed circulatory systems?

Accepted Answer

Open systems have hemolymph that bathes tissues directly, while closed systems confine blood to vessels.

Question 7

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

Accepted Answer

Contraction and movement

Question 8

Which of the following adaptations allowed amniotes to reproduce successfully on land?

Accepted Answer

Amniotic egg with protective membranes

Question 9

Which of the following best describes the process of countercurrent exchange in fish gills?

Accepted Answer

Blood and water flow in opposite directions, maximizing oxygen diffusion.

Question 10

Which of the following is a correct sequence of the four steps in the excretory process?

Accepted Answer

Filtration → Reabsorption → Secretion → Excretion

Question 11

Which of the following statements about the regulation of blood glucose is correct?

Accepted Answer

Insulin decreases blood glucose by promoting glucose uptake and storage.

Question 12

Which of the following is a characteristic of endothermic animals?

Accepted Answer

They maintain a stable body temperature through metabolic heat production.

Question 13

Which of the following best describes the role of the kidney in homeostasis?

Accepted Answer

It filters blood, reabsorbs needed substances, and excretes wastes to maintain internal balance.

Question 14

Which of the following is an example of a conformer?

Accepted Answer

A fish whose internal osmolarity matches that of seawater

Question 15

Which of the following best describes the function of capillaries in the circulatory system?

Accepted Answer

They allow exchange of gases, nutrients, and wastes between blood and tissues.

Question 16

Which of the following is a correct description of the difference between water-soluble and lipid-soluble hormones?

Accepted Answer

Water-soluble hormones bind to cell surface receptors, while lipid-soluble hormones bind to intracellular receptors.

Question 17

Which of the following is a function of connective tissue?

Accepted Answer

Binding and supporting other tissues

Question 18

Which of the following best describes the process of osmoregulation?

Accepted Answer

Regulation of solute concentrations and water balance

Question 19

Which of the following is a correct example of positive feedback?

Accepted Answer

Blood clotting after an injury

Question 20

Which of the following is a correct sequence of blood flow through the mammalian heart and lungs?

Accepted Answer

Right atrium → Right ventricle → Pulmonary artery → Lungs → Pulmonary vein → Left atrium → Left ventricle → Aorta

Animal Evolution, Physiology, and Homeostasis: Study Guide for BIOL 191A (Units 3, Ch. 27, 32, 33, 34)

Study Guide - Practice Questions