Question 1

The currents of water (containing food)that pass through a sponge are maintained by:

Accepted Answer

A) collar cells. 
B) ganglia. 
C) medusae. 
D) the osculum. 
E) a water-vascular system. 
A) collar cells. 
B) ganglia. 
C) medusae. 
D) the osculum. 
E) a water-vascular system. A

Question 2

If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for the insect population?

Accepted Answer

On the positive side, the organisms would not finish maturing and so could not reproduce, which would mean fewer insects. On the negative side, the larval stage is the "hungry stage," so the organisms would stay in the larval state and eat vast quantities, potentially destroying crops.

Question 3

Members of the taxonomic group ________ are best described as having a large, well-developed brain, excellent vision, and being marine carnivorous predators.

Accepted Answer

A) oligochaetes 
B) bivalves 
C) gastropods 
D) insects 
E) cephalopods 
A) oligochaetes 
B) bivalves 
C) gastropods 
D) insects 
E) cephalopods E

Question 4

Explain why natural selection would have favored a closed circulatory system for cephalopods.

Accepted Answer

A closed circulatory system distributes

Question 5

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen lacks tissues and organs and has no head, body symmetry, body cavity, or segmentation. To what phylum does this animal belong?

Accepted Answer

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

Question 6

Cephalopods are the only mollusks that have a closed circulatory system. True or False?

Accepted Answer

A) True 
 B)False

Question 7

Which of these groups is characterized by having a true coelom?

Accepted Answer

A) sponges 
B) cnidarians 
C) arthropods 
D) flatworms 
E) roundworms 
A) sponges 
B) cnidarians 
C) arthropods 
D) flatworms 
E) roundworms

Question 8

A closed circulatory system is characteristic of:

Accepted Answer

A) flatworms. 
B) annelids. 
C) cnidarians. 
D) sponges. 
E) comb jellies. 
A) flatworms. 
B) annelids. 
C) cnidarians. 
D) sponges. 
E) comb jellies.

Question 9

Damage to the embryonic ectoderm would show up as damage to which adult body tissues?

Accepted Answer

A) muscles 
B) nervous tissue 
C) skeletal tissue 
D) circulatory tissue 
E) body cavity linings 
A) muscles 
B) nervous tissue 
C) skeletal tissue 
D) circulatory tissue 
E) body cavity linings

Question 10

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues but lacks organs; has no head, body cavity, or segmentation; and has radial symmetry. To what phylum does this animal belong?

Accepted Answer

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

Question 11

Sea stars (starfish)are bilaterally symmetrical at one time in their life cycle. True or False?

Accepted Answer

A) True 
 B)False

Question 12

The organism in the illustration has:

Accepted Answer

A) a true coelom. 
B) a pseudocoelom. 
C) no coelom. 
A) a true coelom. 
B) a pseudocoelom. 
C) no coelom.

Question 13

Sponges are radially symmetrical. True or False?

Accepted Answer

A) True 
 B)False

Question 14

If motility is considered a characteristic of animals, then why are stationary creatures like sponges still considered to be animals?

Accepted Answer

They have a larval stage that

Question 15

The ________ are the simplest animals to have an excretory system. (Hint: This system consists of cilia beating within canals.)

Accepted Answer

The answer of The ________ are the simplest animals to...

Question 16

The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are "inflated" by the ________, which is unique to the echinoderms.

Accepted Answer

A) coelom 
B) hydrostatic skeleton 
C) tubular gut 
D) water-vascular system 
E) hemocoel 
A) coelom 
B) hydrostatic skeleton 
C) tubular gut 
D) water-vascular system 
E) hemocoel

Question 17

Which of these groups is characterized by having no body cavity?

Accepted Answer

A) roundworms 
B) annelids 
C) arthropods 
D) chordates 
E) cnidarians 
A) roundworms 
B) annelids 
C) arthropods 
D) chordates 
E) cnidarians

Question 18

The animals most like the ancestral protist colonies that likely gave rise to all animals are:

Accepted Answer

A) chordates. 
B) arthropods. 
C) sponges. 
D) echinoderms. 
E) nematodes. 
A) chordates. 
B) arthropods. 
C) sponges. 
D) echinoderms. 
E) nematodes.

Question 19

The taxonomic group that contains the largest and most intelligent invertebrates is:

Accepted Answer

A) Cephalopoda. 
B) Gastropoda. 
C) Chordata. 
D) Aves. 
E) Uniramia. 
A) Cephalopoda. 
B) Gastropoda. 
C) Chordata. 
D) Aves. 
E) Uniramia.

Question 20

How many tissue layers are in the embryos of sponges?

Accepted Answer

A) none 
B) one 
C) two 
D) three 
E) four 
A) none 
B) one 
C) two 
D) three 
E) four

Exam 23: Animal Diversity I: Invertebrates

The currents of water (containing food)that pass through a sponge are maintained by:

If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for the insect population?

Members of the taxonomic group ________ are best described as having a large, well-developed brain, excellent vision, and being marine carnivorous predators.

Explain why natural selection would have favored a closed circulatory system for cephalopods.

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen lacks tissues and organs and has no head, body symmetry, body cavity, or segmentation. To what phylum does this animal belong?

Cephalopods are the only mollusks that have a closed circulatory system. True or False?

Which of these groups is characterized by having a true coelom?

A closed circulatory system is characteristic of:

Damage to the embryonic ectoderm would show up as damage to which adult body tissues?

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues but lacks organs; has no head, body cavity, or segmentation; and has radial symmetry. To what phylum does this animal belong?

Sea stars (starfish)are bilaterally symmetrical at one time in their life cycle. True or False?

The organism in the illustration has:

Sponges are radially symmetrical. True or False?

If motility is considered a characteristic of animals, then why are stationary creatures like sponges still considered to be animals?

The ________ are the simplest animals to have an excretory system. (Hint: This system consists of cilia beating within canals.)

The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are "inflated" by the ________, which is unique to the echinoderms.

Which of these groups is characterized by having no body cavity?

The animals most like the ancestral protist colonies that likely gave rise to all animals are:

The taxonomic group that contains the largest and most intelligent invertebrates is:

How many tissue layers are in the embryos of sponges?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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