Question 1

Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful.Why is there a difference?

Accepted Answer

A) Nematocysts in ctenophores lack venom. 
B) Ctenophores have very reduced nematocysts that cannot penetrate human skin. 
C) Ctenphores do not possess nematocysts. 
D) Ctenophores only use nematocycts for feeding, not for defense. 
A) Nematocysts in ctenophores lack venom. 
B) Ctenophores have very reduced nematocysts that cannot penetrate human skin. 
C) Ctenphores do not possess nematocysts. 
D) Ctenophores only use nematocycts for feeding, not for defense. C

Question 2

Which one of the following terms applies to the phylum Nematoda?

Accepted Answer

A) Parazoa 
B) diploblastic 
C) deuterostome 
D) pseudocoelomate 
A) Parazoa 
B) diploblastic 
C) deuterostome 
D) pseudocoelomate D

Question 3

In all deuterostomes, the cells divide parallel to and at right angles to the polar axis.This pattern is called _______________.

Accepted Answer

radial cleavage

Question 4

Which one of the following features is unique to animals?

Accepted Answer

A) cells organized into tissues 
B) movement associated with muscle tissue and nervous tissue 
C) heterotrophism 
D) cells without walls 
A) cells organized into tissues 
B) movement associated with muscle tissue and nervous tissue 
C) heterotrophism 
D) cells without walls

Question 5

Solid worms that lack a body cavity are known as

Accepted Answer

A) acoelomates. 
B) pseudocoelomates. 
C) triploblastic. 
D) coelomates. 
A) acoelomates. 
B) pseudocoelomates. 
C) triploblastic. 
D) coelomates.

Question 6

A biologist discovered a new animal.Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus.This animal was categorized as a

Accepted Answer

A) parazoan. 
B) radiata. 
C) deuterostome. 
D) protostome. 
A) parazoan. 
B) radiata. 
C) deuterostome. 
D) protostome.

Question 7

How could a biologist distinguish an acoel flatworm from a free living platyhelminth?

Accepted Answer

A) The acoel worm would be solid throughout, since it lacks a gut. 
B) The acoel worm would have a nervous system. 
C) The platyhelminth would have a more primitive gut and nervous system. 
D) Only the acoel is triploblastic. 
A) The acoel worm would be solid throughout, since it lacks a gut. 
B) The acoel worm would have a nervous system. 
C) The platyhelminth would have a more primitive gut and nervous system. 
D) Only the acoel is triploblastic.

Question 8

A mixture of DNA fragments is amplified from a sample of ocean water.Which gene(s) could be definitively categorized as originating from a species of animal?

Accepted Answer

A) Genes for ATP synthase 
B) Genes for RuBisCO 
C) Gene for Spongin 
D) Cell cycle regulatory genes 
A) Genes for ATP synthase 
B) Genes for RuBisCO 
C) Gene for Spongin 
D) Cell cycle regulatory genes

Question 9

In the animal subkingdom _____, the animals lack symmetry and possess neither tissues nor organs.

Accepted Answer

The answer of In the animal subkingdom _____, the animals...

Question 10

A scientist is studying some developing eggs from an ocean sample.The early embryos have divided only a few times, and all cells look identical.When the scientist carefully removes half the cells from an embryo, both clumps of cells are able to complete development, forming twins.The eggs can be identified as:

Accepted Answer

A) deuterostomes 
B) protostomes 
C) crustaceans 
D) cnidarians 
A) deuterostomes 
B) protostomes 
C) crustaceans 
D) cnidarians

Question 11

Which one of the following terms applies to the phylum Bryozoa?

Accepted Answer

A) radial symmetry 
B) lophophore 
C) Parazoa 
D) deuterostome 
A) radial symmetry 
B) lophophore 
C) Parazoa 
D) deuterostome

Question 12

Of the following features, which is the most widely shared in the animal kingdom?

Accepted Answer

A) protostome development 
B) radial cleavage 
C) molting of a cuticle or exoskeleton 
D) a body plan with symmetry 
A) protostome development 
B) radial cleavage 
C) molting of a cuticle or exoskeleton 
D) a body plan with symmetry

Question 13

Which one of the following terms applies to the phylum Mollusca?

Accepted Answer

A) protostome 
B) pseudocoelomate 
C) Parazoa 
D) diploblastic 
A) protostome 
B) pseudocoelomate 
C) Parazoa 
D) diploblastic

Question 14

Which of the following terms is mismatched with its meaning or characteristics?

Accepted Answer

A) Diploblastic-ectoderm and mesoderm 
B) Triploblastic-ectoderm, mesoderm, and endoderm 
C) Parazoa-lacks symmetry; no tissues 
D) Eumetazoa-definite symmetry; tissues organized 
A) Diploblastic-ectoderm and mesoderm 
B) Triploblastic-ectoderm, mesoderm, and endoderm 
C) Parazoa-lacks symmetry; no tissues 
D) Eumetazoa-definite symmetry; tissues organized

Question 15

Which one of the following terms applies to the phylum Cnidaria?

Accepted Answer

A) radial symmetry 
B) pseudocoelomate 
C) Parazoa 
D) triploblastic 
A) radial symmetry 
B) pseudocoelomate 
C) Parazoa 
D) triploblastic

Question 16

The embryonic layer found only in bilaterally symmetrical eumetazoans is the ______.

Accepted Answer

The answer of The embryonic layer found only in bilaterally...

Question 17

Which one of the following terms applies to the phylum Platyhelminthes?

Accepted Answer

A) radial cleavage 
B) protostome 
C) diploblastic 
D) acoelomate 
A) radial cleavage 
B) protostome 
C) diploblastic 
D) acoelomate

Question 18

In animals that display indeterminate development

Accepted Answer

A) embryonic cells have a predetermined fate. 
B) bilateral symmetry cannot develop. 
C) early embryonic cells, if separated from the embryo, can develop into complete organisms. 
D) embryonic cells show spiral cleavage. 
A) embryonic cells have a predetermined fate. 
B) bilateral symmetry cannot develop. 
C) early embryonic cells, if separated from the embryo, can develop into complete organisms. 
D) embryonic cells show spiral cleavage.

Question 19

Animals with a body cavity located between the mesoderm and endoderm are _____.

Accepted Answer

The answer of Animals with a body cavity located between...

Question 20

Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.

Accepted Answer

A) Porifera 
B) Rotifera 
C) Echinodermata 
D) Chordata 
A) Porifera 
B) Rotifera 
C) Echinodermata 
D) Chordata

Exam 33: Animal Diversity and the Evolution of Body Plans

Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful.Why is there a difference?

Which one of the following terms applies to the phylum Nematoda?

In all deuterostomes, the cells divide parallel to and at right angles to the polar axis.This pattern is called _______________.

Which one of the following features is unique to animals?

Solid worms that lack a body cavity are known as

A biologist discovered a new animal.Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus.This animal was categorized as a

How could a biologist distinguish an acoel flatworm from a free living platyhelminth?

A mixture of DNA fragments is amplified from a sample of ocean water.Which gene(s) could be definitively categorized as originating from a species of animal?

In the animal subkingdom _____, the animals lack symmetry and possess neither tissues nor organs.

Which one of the following terms applies to the phylum Bryozoa?

Of the following features, which is the most widely shared in the animal kingdom?

Which one of the following terms applies to the phylum Mollusca?

Which of the following terms is mismatched with its meaning or characteristics?

Which one of the following terms applies to the phylum Cnidaria?

The embryonic layer found only in bilaterally symmetrical eumetazoans is the ______.

Which one of the following terms applies to the phylum Platyhelminthes?

In animals that display indeterminate development

Animals with a body cavity located between the mesoderm and endoderm are _____.

Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.

The Science of Biology

The Nature of Molecules and the Properties of Water

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes, Mapping, and the Meiosis-Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics, Phylogenies, and Comparative Biology

Genome Evolution

Evolution of Development

The Origin and Diversity of Life

Viruses

Prokaryotes

Protists

Seedless Plants

Seed Plants

Fungi

Protostomes

Deuterostomes

Plant Form

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Ecology of Individuals and Populations

Community Ecology

Dynamics of Ecosystems

The Biosphere

Conservation Biology

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