Question 1

Classification. Respond to the following statements in reference to the five animal phyla listed below.
-Members of this group have a brain with nerve cords,have a saclike or branched gut,and lack a circulatory system.

Accepted Answer

A) Porifera 
B) Cnidaria 
C) Platyhelminthes 
D) Nematoda 
E) Annelida

Question 2

Four of the following are echinoderms.Which one is the exception?

Accepted Answer

A)  Sea cucumber 
B)  Sea star 
C)  Urchin 
D)  Brittle star 
E)  Krill

Question 3

Classification. Respond to the following statements in reference to the five animal phyla listed below.
-Members of this phylum have a brain with a ventral nerve cord,a complete gut,and a circulatory system that is usually closed.

Accepted Answer

A) Porifera 
B) Cnidaria 
C) Platyhelminthes 
D) Nematoda 
E) Annelida

Question 4

-In the accompanying figure,a(n)____ has body plan B,which features a __________.

Accepted Answer

A)  roundworm; pseudocoelom 
B)  roundworm; coelom 
C)  tapeworm; no body cavity 
D)  annelid; coelom 
E)  earthworm; pseudocoelom

Question 5

What kind of system do annelids have in which blood flows through a continuous system of vessels?

Accepted Answer

A)  Respiratory system 
B)  Complete digestive system 
C)  Closed circulatory system 
D)  Nervous system 
E)  Open circulatory system

Question 6

Animals most likely evolved from a colony similar to __________,a type of protist.

Accepted Answer

The answer of Animals most likely evolved from a colony...

Question 7

Figure 24.9
 
-In the accompanying figure,an asexually reproducing individual is indicated by _____.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 8

Which group of arthropods can be distinguished from other groups by their calcium-containing,hardened exoskeleton and mostly marine habitat?

Accepted Answer

A)  Insects 
B)  Millipedes 
C)  Chelicerates 
D)  Crustaceans 
E)  Trilobites

Question 9

The ____ belongs to the same protostome clade as mollusks and annelids.

Accepted Answer

A)  Cnidaria 
B)  Platyhelminthes 
C)  Crustacea 
D)  Arthropoda 
E)  Nematoda

Question 10

What are commonly called sea slugs and are actually marine gastropods with a greatly reduced shell?

Accepted Answer

A)  Mollusks 
B)  Cephalopods 
C)  Oligochaetes 
D)  Nudibranchs 
E)  Chitons

Question 11

In __________,the mouth forms from the second opening.

Accepted Answer

The answer of In __________,the mouth forms from the second...

Question 12

__________,such as jellyfishes,corals,and sea anemones,are radially symmetrical.

Accepted Answer

The answer of __________,such as jellyfishes,corals,and sea anemones,are radially symmetrical....

Question 13

The animal gut cavity may be a fully lined coelom or a partially lined __________.

Accepted Answer

The answer of The animal gut cavity may be a...

Question 14

Four of the following describe a bilaterally symmetrical animal.Which one is the exception?

Accepted Answer

A)  It has left and right sides. 
B)  It usually displays cephalization. 
C)  It produces mirror images regardless of the number of "cuts" through the central axis. 
D)  It usually has a three layer body plan. 
E)  It can be a deuterostome.

Exam 24: Animal Evolution: The Invertebrates

Classification. Respond to the following statements in reference to the five animal phyla listed below. -Members of this group have a brain with nerve cords,have a saclike or branched gut,and lack a circulatory system.

Four of the following are echinoderms.Which one is the exception?

Classification. Respond to the following statements in reference to the five animal phyla listed below. -Members of this phylum have a brain with a ventral nerve cord,a complete gut,and a circulatory system that is usually closed.

-In the accompanying figure,a(n) has body plan B,which features a ______.

What kind of system do annelids have in which blood flows through a continuous system of vessels?

Animals most likely evolved from a colony similar to __________,a type of protist.

Figure 24.9 -In the accompanying figure,an asexually reproducing individual is indicated by _____.

Which group of arthropods can be distinguished from other groups by their calcium-containing,hardened exoskeleton and mostly marine habitat?

The ____ belongs to the same protostome clade as mollusks and annelids.

What are commonly called sea slugs and are actually marine gastropods with a greatly reduced shell?

In __________,the mouth forms from the second opening.

__________,such as jellyfishes,corals,and sea anemones,are radially symmetrical.

The animal gut cavity may be a fully lined coelom or a partially lined __________.

Four of the following describe a bilaterally symmetrical animal.Which one is the exception?

Exam 24: Animal Evolution: The Invertebrates

Classification. Respond to the following statements in reference to the five animal phyla listed below. -Members of this group have a brain with nerve cords,have a saclike or branched gut,and lack a circulatory system.

Four of the following are echinoderms.Which one is the exception?

Classification. Respond to the following statements in reference to the five animal phyla listed below. -Members of this phylum have a brain with a ventral nerve cord,a complete gut,and a circulatory system that is usually closed.

-In the accompanying figure,a(n) ____ has body plan B,which features a __________.

What kind of system do annelids have in which blood flows through a continuous system of vessels?

Animals most likely evolved from a colony similar to __________,a type of protist.

Figure 24.9 -In the accompanying figure,an asexually reproducing individual is indicated by _____.

Which group of arthropods can be distinguished from other groups by their calcium-containing,hardened exoskeleton and mostly marine habitat?

The ____ belongs to the same protostome clade as mollusks and annelids.

What are commonly called sea slugs and are actually marine gastropods with a greatly reduced shell?

In __________,the mouth forms from the second opening.

__________,such as jellyfishes,corals,and sea anemones,are radially symmetrical.

The animal gut cavity may be a fully lined coelom or a partially lined __________.

Four of the following describe a bilaterally symmetrical animal.Which one is the exception?

-In the accompanying figure,a(n) has body plan B,which features a ______.