Question 1

Which of the following is a shared derived character that defines the major clades of chordates?

Accepted Answer

Presence of a vertebral column

Question 2

Hagfishes and lampreys are unique among vertebrates because they:

Accepted Answer

Lack hinged jaws and paired fins

Question 3

Which adaptation allowed jawed vertebrates to diversify and become effective predators?

Accepted Answer

Evolution of paired fins and jaws

Question 4

Chondrichthyans, such as sharks and rays, are characterized by:

Accepted Answer

A flexible skeleton made primarily of cartilage

Question 5

Which feature is unique to ray-finned fishes among vertebrates?

Accepted Answer

An operculum covering the gills

Question 6

Lobe-finned fishes are important in vertebrate evolution because:

Accepted Answer

They gave rise to tetrapods

Question 7

Which of the following obstacles did early tetrapods face when moving onto land?

Accepted Answer

Gas exchange, water conservation, and structural support

Question 8

Amphibians are distinct from other tetrapods because they:

Accepted Answer

Use their moist skin for gas exchange

Question 9

The amniotic egg is a key adaptation for life on land because it:

Accepted Answer

Contains membranes that protect and nourish the embryo

Question 10

Which of the following is NOT a characteristic of reptiles?

Accepted Answer

Moist skin used for gas exchange

Question 11

Birds are considered reptiles because they:

Accepted Answer

Share a common ancestor with other reptiles and have amniotic eggs

Question 12

Which adaptation is NOT associated with flight in birds?

Accepted Answer

Presence of a swim bladder

Question 13

Mammals are unique among vertebrates because they:

Accepted Answer

Produce milk through mammary glands

Question 14

Which group of mammals lays eggs?

Accepted Answer

Monotremes

Question 15

Which of the following is a primate adaptation for life in trees?

Accepted Answer

Grasping hands and feet with flexible digits

Question 16

Which of the following statements about human evolution is correct?

Accepted Answer

Humans and chimpanzees share about 99% of their genes

Question 17

Which of the following is a function of the allantois in the amniotic egg?

Accepted Answer

Disposal of metabolic waste

Question 18

Which of the following best explains why ray-finned fishes are the most diverse group of vertebrates?

Accepted Answer

They possess adaptations such as an operculum and swim bladder

Question 19

Which evolutionary innovation allowed vertebrates to colonize land successfully?

Accepted Answer

Development of limbs and amniotic eggs

Question 20

Which of the following is a correct pairing of vertebrate group and a defining feature?

Accepted Answer

Lobe-finned fishes: muscular fins with rod-shaped bones

The Evolution of Vertebrate Diversity (Chapter 19) – Study Notes

Study Guide - Practice Questions