Chapter 33: Deuterostome Animals

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

Multiple Choice

 

1. Which of the following is not a characteristic of deuterostomes?
2. Radial cleavage
3. Three germ layers including the ectoderm, mesoderm, and endoderm
4. A blastopore that becomes the anus
5. Greater number of species than the protostomes
6. Well-developed coelomic body cavities in most of them

Answer: d

Textbook Reference: 33.1 What Is a Deuterostome?

Page: 693

Bloom’s Category: 1. Remembering

 

2. Which of the following statements about protostome and deuterostome evolution is false?
3. Both lineages exploited the abundant food supplies buried in soft marine substrates.
4. Many groups in both lineages developed elaborate structures for extracting prey from water.
5. In both lineages, a coelomic cavity evolved and became divided into compartments that allowed better control of body shape and movement.
6. Both lineages evolved locomotor abilities.
7. Both groups invaded land and evolved into very large terrestrial animals.

Answer: e

Textbook Reference: 33.1 What Is a Deuterostome?

Page: 693

Bloom’s Category: 3. Applying

 

3. Which of the following did not occur in both the protostomes and deuterostomes?
4. Evolution of structures for filtering food from water
5. Evolution of wormlike burrowing forms
6. Evolution of adaptations needed for invasion of the land
7. Evolution of large terrestrial species
8. Evolution of jointed appendages for improved locomotion

Answer: d

Textbook Reference: 33.1 What Is a Deuterostome?

Page: 693

Bloom’s Category: 2. Understanding

 

4. The _______ are likely the most recent common ancestors of all deuterostomes.
5. yunnanozoans
6. echinoderms
7. vertebrates
8. arthropods
9. sponges

Answer: a

Textbook Reference: 33.1 What Is a Deuterostome?

Page: 694

Bloom’s Category: 2. Understanding

 

5. Living deuterostomes comprise three clades, the echinoderms, the chordates, and the
6. urochordates.
7. cephalochordates.
8. hemichordates.
9. vertebrates.
10. yunnanzoans.

Answer: c

Textbook Reference: 33.1 What Is a Deuterostome?

Page: 694

Bloom’s Category: 1. Remembering