Question 1

Four of the five answers listed below are molluscan body features. Select the exception.

Accepted Answer

A) gills 
B) head and foot 
C) mantle 
D) conspicuous segmentation 
E) radula 
A) gills 
B) head and foot 
C) mantle 
D) conspicuous segmentation 
E) radula

Question 2

Unlike most other animals, sponges lack which of the following?

Accepted Answer

A) a digestive tract only 
B) a symmetrical body plan only 
C) tissues only 
D) a digestive tract and a symmetrical body plan only 
E) a digestive tract, a symmetrical body plan, and tissues 
A) a digestive tract only 
B) a symmetrical body plan only 
C) tissues only 
D) a digestive tract and a symmetrical body plan only 
E) a digestive tract, a symmetrical body plan, and tissues

Question 3

Match the description to the correct mollusk group.
-all have a hinged, two part shell

Accepted Answer

A) gastropods 
B) bivalves 
C) cephalopods 
D) all mollusk groups 
A) gastropods 
B) bivalves 
C) cephalopods 
D) all mollusk groups

Question 4

Which statement most accurately describes incomplete metamorphosis?

Accepted Answer

A) A larva grows and turns first into a pupa, and then into an adult. 
B) Development is never fully complete and an immature adult is eventually hatched. 
C) An egg hatches into a nymph that gradually takes on the adult form over the course of several molts. 
D) Insects hatch from an egg looking like a tiny adult and they simply grow bigger with each molt. 
E) There is no such thing as incomplete metamorphosis, since all eggs eventually become functional adults. 
A) A larva grows and turns first into a pupa, and then into an adult. 
B) Development is never fully complete and an immature adult is eventually hatched. 
C) An egg hatches into a nymph that gradually takes on the adult form over the course of several molts. 
D) Insects hatch from an egg looking like a tiny adult and they simply grow bigger with each molt. 
E) There is no such thing as incomplete metamorphosis, since all eggs eventually become functional adults.

Question 5

Sea stars detect movement and light ____.

Accepted Answer

A) through vibrations in the water 
B) using eyespots at the tips of the arms 
C) using eyespots on the top of the mouth 
D) through electrical pulses 
E) through their skin 
A) through vibrations in the water 
B) using eyespots at the tips of the arms 
C) using eyespots on the top of the mouth 
D) through electrical pulses 
E) through their skin

Question 6

Bilateral symmetry is characteristic of ____.

Accepted Answer

A) cnidarians 
B) sponges 
C) jellyfish 
D) flatworms 
E) coral polyps 
A) cnidarians 
B) sponges 
C) jellyfish 
D) flatworms 
E) coral polyps

Question 7

Which group can be distinguished from the other arthropods by its possession of two pairs of antennae?

Accepted Answer

A) insects 
B) millipedes 
C) chelicerates 
D) crustaceans 
E) trilobites 
A) insects 
B) millipedes 
C) chelicerates 
D) crustaceans 
E) trilobites

Question 8

An animal with bilateral symmetry ____.

Accepted Answer

A) has no defined body sides 
B) usually has no body cavity 
C) has body parts repeated around a central axis 
D) has left and right sides 
E) is not typical of animals with a three-layer body plan 
A) has no defined body sides 
B) usually has no body cavity 
C) has body parts repeated around a central axis 
D) has left and right sides 
E) is not typical of animals with a three-layer body plan

Question 9

A scolex is ____.

Accepted Answer

A) the anterior attachment organ of a tapeworm 
B) the feeding organ of a fluke 
C) an appendage of a sandworm 
D) the egg of a sea star 
E) the larva of an aquatic insect 
A) the anterior attachment organ of a tapeworm 
B) the feeding organ of a fluke 
C) an appendage of a sandworm 
D) the egg of a sea star 
E) the larva of an aquatic insect

Question 10

Which feature is a disadvantage of an exoskeleton?

Accepted Answer

A) It must be shed (and a new one made) for its owner to grow. 
B) It does not anchor muscles as efficiently as an endoskeleton. 
C) It allows for excess water loss. 
D) It is not flexible enough to allow a full range of movement. 
E) It is not able to absorb pigments for sufficient camouflage. 
A) It must be shed (and a new one made) for its owner to grow. 
B) It does not anchor muscles as efficiently as an endoskeleton. 
C) It allows for excess water loss. 
D) It is not flexible enough to allow a full range of movement. 
E) It is not able to absorb pigments for sufficient camouflage.

Question 11

The term 'coral bleaching' refers to ____.

Accepted Answer

A) the loss of a protist symbiont by a reef-building coral 
B) the growth of new cnidarians within a reef 
C) the color change in coral reefs as they become mature 
D) an invasion of a coral reef by a colorless protist as opposed to a green, photosynthetic one 
E) the loss of the calcium carbonate skeleton of cnidarian polyps 
A) the loss of a protist symbiont by a reef-building coral 
B) the growth of new cnidarians within a reef 
C) the color change in coral reefs as they become mature 
D) an invasion of a coral reef by a colorless protist as opposed to a green, photosynthetic one 
E) the loss of the calcium carbonate skeleton of cnidarian polyps

Question 12

Which statement most accurately describes the deuterostomes?

Accepted Answer

A) The first opening on the embryo surface becomes the mouth. 
B) Their food and wastes enter and exit through the same body opening. 
C) They have an incomplete digestive system. 
D) They have radial symmetry. 
E) Their mouth develops from the second embryonic opening. 
A) The first opening on the embryo surface becomes the mouth. 
B) Their food and wastes enter and exit through the same body opening. 
C) They have an incomplete digestive system. 
D) They have radial symmetry. 
E) Their mouth develops from the second embryonic opening.

Exam 23: Animals I: Major Invertebrate Groups

Four of the five answers listed below are molluscan body features. Select the exception.

Unlike most other animals, sponges lack which of the following?

Match the description to the correct mollusk group. -all have a hinged, two part shell

Which statement most accurately describes incomplete metamorphosis?

Sea stars detect movement and light ____.

Bilateral symmetry is characteristic of ____.

Which group can be distinguished from the other arthropods by its possession of two pairs of antennae?

An animal with bilateral symmetry ____.

A scolex is ____.

Which feature is a disadvantage of an exoskeleton?

The term 'coral bleaching' refers to ____.

Which statement most accurately describes the deuterostomes?

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Effects on the Biosphere

Filters