Question 1

The advantage of bilateral symmetry is that it allowed for the evolution of:

Accepted Answer

A) appendages 
B) reproductive structures 
C) cephalization 
D) parasites 
A) appendages 
B) reproductive structures 
C) cephalization 
D) parasites

Question 2

The phylum that shows the greatest diversity,or the greatest number of species,is:

Accepted Answer

A) Arthropoda 
B) Echinodermata 
C) Chordata 
D) Mollusca 
A) Arthropoda 
B) Echinodermata 
C) Chordata 
D) Mollusca

Question 3

Which term does NOT apply to solid worms,Platyhelminthes?

Accepted Answer

A) Bilateral symmetry 
B) Acoelomate 
C) Mostly parasitic 
D) Notochord 
A) Bilateral symmetry 
B) Acoelomate 
C) Mostly parasitic 
D) Notochord

Question 4

Evolution of a body cavity is important for several reasons.List three.

Accepted Answer

(1)Fluids moving within the body cavity

Question 5

Which is incorrect about cnidarians?

Accepted Answer

A) They exist as medusae and/or polyps. 
B) They undergo extracellular digestion. 
C) They are herbivores that eat phytoplankton only. 
D) Medusae are commonly called jellyfish. 
E) They exhibit radial symmetry. 
A) They exist as medusae and/or polyps. 
B) They undergo extracellular digestion. 
C) They are herbivores that eat phytoplankton only. 
D) Medusae are commonly called jellyfish. 
E) They exhibit radial symmetry.

Question 6

Chelicerates include the extinct trilobites,and modern-day horseshoe crab and:

Accepted Answer

A) lobsters 
B) spiders and mites 
C) nematodes 
D) insects 
A) lobsters 
B) spiders and mites 
C) nematodes 
D) insects

Question 7

Which is incorrect about deuterostomes?

Accepted Answer

A) The commitment of embryonic cells to prescribed developmental pathways occurs later than in protostomes. 
B) The blastopore becomes the animal's anus. 
C) The archenteron outpockets to form coelom. 
D) They are derived from the protostomes. 
E) Embryonic cells cleave in a spiral pattern. 
A) The commitment of embryonic cells to prescribed developmental pathways occurs later than in protostomes. 
B) The blastopore becomes the animal's anus. 
C) The archenteron outpockets to form coelom. 
D) They are derived from the protostomes. 
E) Embryonic cells cleave in a spiral pattern.

Question 8

Mollusks breathe using __________.

Accepted Answer

The answer of Mollusks breathe using __________....

Question 9

Molecular systematics based on ribosomal RNA sequences favors the _____ hypothesis for the origin of metazoans.

Accepted Answer

A) multinucleate 
B) colonial flagellate 
C) polyphyletic origin 
D) parazoan 
A) multinucleate 
B) colonial flagellate 
C) polyphyletic origin 
D) parazoan

Question 10

Put the following terms in order from first to last in development.

Accepted Answer

A) morula $\rarr$ blastula $\rarr$gastrula $\rarr$ zygote 
B) zygote $\rarr$ morula $\rarr$ gastrula $\rarr$ blastula 
C) zygote $\rarr$ morula $\rarr$blastula $\rarr$ gastrula 
D) blastula $\rarr$ zygote $\rarr$gastrula $\rarr$ morula 
A) morula $\rarr$ blastula $\rarr$gastrula $\rarr$ zygote 
B) zygote $\rarr$ morula $\rarr$ gastrula $\rarr$ blastula 
C) zygote $\rarr$ morula $\rarr$blastula $\rarr$ gastrula 
D) blastula $\rarr$ zygote $\rarr$gastrula $\rarr$ morula

Question 11

We see that in the Eumetazoa,one of the advances is toward bilateral symmetry.What kinds of things does bilateral symmetry enable an organism to do?

Accepted Answer

Animals that are bilaterally symmetrical

Exam 19: Evolution of the Animal Phyla

The advantage of bilateral symmetry is that it allowed for the evolution of:

The phylum that shows the greatest diversity,or the greatest number of species,is:

Which term does NOT apply to solid worms,Platyhelminthes?

Evolution of a body cavity is important for several reasons.List three.

Which is incorrect about cnidarians?

Chelicerates include the extinct trilobites,and modern-day horseshoe crab and:

Which is incorrect about deuterostomes?

Mollusks breathe using __________.

Molecular systematics based on ribosomal RNA sequences favors the _____ hypothesis for the origin of metazoans.

Put the following terms in order from first to last in development.

We see that in the Eumetazoa,one of the advances is toward bilateral symmetry.What kinds of things does bilateral symmetry enable an organism to do?

The Science of Biology

The Chemistry of Life

Molecules of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

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