Question 1

Which of the following evolutionary innovations first appeared in the lineage leading to vertebrates, as shown in the animal phylogeny diagram?

Accepted Answer

Skull and backbone composed of vertebrae

Question 2

Which of the following best describes the function of the amniotic egg in amniotes?

Accepted Answer

It enables reproduction in terrestrial environments by protecting the embryo with specialized membranes.

Question 3

Which of the following is a key difference between the endocrine and nervous systems in animals?

Accepted Answer

The endocrine system uses hormones for long-distance signaling, while the nervous system uses electrical impulses for rapid, targeted responses.

Question 4

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

Accepted Answer

Regulation of blood glucose levels by insulin and glucagon

Question 5

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

Accepted Answer

Blood and water flow in opposite directions, maintaining a gradient that maximizes oxygen diffusion.

Question 6

Which of the following is NOT a function of the mammalian kidney?

Accepted Answer

Production of insulin

Question 7

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

Accepted Answer

Filtration, reabsorption, secretion, excretion

Question 8

Which of the following animals is an example of an osmoconformer?

Accepted Answer

Marine invertebrate such as a jellyfish

Question 9

Which of the following best describes the role of insulin in glucose homeostasis?

Accepted Answer

It decreases blood glucose levels by promoting glucose uptake and storage as glycogen.

Question 10

Which of the following is a characteristic of arteries compared to veins and capillaries?

Accepted Answer

They have the highest blood pressure.

Question 11

Which of the following is a major adaptation that allowed tetrapods to colonize land?

Accepted Answer

Evolution of limbs with digits

Question 12

Which of the following best describes the function of epithelial tissue?

Accepted Answer

It lines organs and body cavities, providing protection and selective transport.

Question 13

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

Accepted Answer

Blood clotting cascade

Question 14

Which of the following is a function of the lymphatic system?

Accepted Answer

Returning fluid and proteins to the blood and filtering pathogens

Question 15

Which of the following is a distinguishing feature of chordates?

Accepted Answer

Dorsal, hollow nerve cord

Question 16

Which of the following best describes the difference between water-soluble and lipid-soluble hormones?

Accepted Answer

Lipid-soluble hormones bind to receptors inside target cells, while water-soluble hormones bind to receptors on the cell surface.

Question 17

Which of the following is a correct pairing of animal group and circulatory system type?

Accepted Answer

Fish – single circulation

Question 18

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 → left atrium → left ventricle → aorta

Question 19

Which of the following is a function of capillaries in the circulatory system?

Accepted Answer

Allowing exchange of gases, nutrients, and wastes between blood and tissues

Question 20

Which of the following best describes the process of mechanical digestion?

Accepted Answer

Physical breakdown of food into smaller pieces to increase surface area

Animal Diversity, Physiology, and Circulation: Study Guide for BIOL 191A (Ch. 27, 32, 33, 34)

Study Guide - Practice Questions