Question 1

Small projections between the ossicles of sea stars that function in respiration are the ______________.

Accepted Answer

The answer of Small projections between the ossicles of sea...

Question 2

The common name for chaetognaths is

Accepted Answer

A) arrow worms. 
B) acorn worms. 
C) spoon worms. 
D) lancelets. 
E) elvers. 
A) arrow worms. 
B) acorn worms. 
C) spoon worms. 
D) lancelets. 
E) elvers.

Question 3

Brittle stars differ from sea stars by

Accepted Answer

A) lacking pedicellariae. 
B) lacking papulae,intestine,or an anus. 
C) having the ambulacral grooves closed and covered with arm ossicles. 
D) having tube feet without suckers. 
E) all of the choices are correct distinctions. 
A) lacking pedicellariae. 
B) lacking papulae,intestine,or an anus. 
C) having the ambulacral grooves closed and covered with arm ossicles. 
D) having tube feet without suckers. 
E) all of the choices are correct distinctions.

Question 4

The crinoids

Accepted Answer

A) have the most primitive characters. 
B) have far fewer living species than are found in the fossil record. 
C) include the shallow-water feather stars of tropical oceans. 
D) include sea lilies that resemble a stalked flower. 
E) all of the choices are correct. 
A) have the most primitive characters. 
B) have far fewer living species than are found in the fossil record. 
C) include the shallow-water feather stars of tropical oceans. 
D) include sea lilies that resemble a stalked flower. 
E) all of the choices are correct.

Question 5

The ancestor of the echinoderms had _____________ symmetry.

Accepted Answer

The answer of The ancestor of the echinoderms had _____________...

Question 6

A sea star feeds by absorbing food through the

Accepted Answer

A) tube feet on the tentacles. 
B) dermal calcareous ossicles. 
C) stone and ring canals. 
D) lower part of stomach which is everted. 
E) sieve plate. 
A) tube feet on the tentacles. 
B) dermal calcareous ossicles. 
C) stone and ring canals. 
D) lower part of stomach which is everted. 
E) sieve plate.

Question 7

The five pairs of bursae in brittle stars are used for

Accepted Answer

A) digestion and excretion. 
B) respiration and reproduction. 
C) reproduction and digestion. 
D) circulation and digestion. 
E) circulation and excretion. 
A) digestion and excretion. 
B) respiration and reproduction. 
C) reproduction and digestion. 
D) circulation and digestion. 
E) circulation and excretion.

Exam 22: Chaetognaths, echinoderms, and Hemichordates

Small projections between the ossicles of sea stars that function in respiration are the ______________.

The common name for chaetognaths is

Brittle stars differ from sea stars by

The crinoids

The ancestor of the echinoderms had _____________ symmetry.

A sea star feeds by absorbing food through the

The five pairs of bursae in brittle stars are used for

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, Protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distribution

Animal Ecology

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