Chapter 16

Question 1

What does the octopus use to move quickly through the water?

Answer 1

siphon

Question 2

What part of the clam’s body manufactures the materials for the shell?

Answer 2

mantle

Question 3

Clams use their muscular feet to

Answer 3

move themselves through the sand

Question 4

Clams obtain food by

Answer 4

filtering it from the water

Question 5

Does a clam have an exoskeleton?

Answer 5

no

Question 6

Which phylum has the most animal species?

Answer 6

Arthropoda

Question 7

Are tentacles a characteristic of insects?

Answer 7

no

Question 8

Name three characteristics of insects

Answer 8

1. six legs
2. compound eyes
3. exoskeleton

Question 9

Since the grasshopper has an open circulatory system, it does not have

Answer 9

capillaries

Question 10

A grasshopper develops by ___________ metamorphosis.

Answer 10

incomplete

Question 11

A starfish leg/arm is called a _________

Answer 11

ray

Question 12

After it has opened a clam’s shell, a starfish

Answer 12

pushes its stomach into the clam

Question 13

Structures on an octopus’s arms that help it grasp items_________

Answer 13

suction disks

Question 14

Part of an octopus’s jet propulsion system and of a clam’s feeding system__________

Answer 14

siphon

Question 15

Describes an animal having two shells hinged together

Answer 15

bivalve

Question 16

Special eyes found on most insects ________

Answer 16

compound eyes

Question 17

Arthropod organs used to detect smells and to feel its surrounding ____________

Answer 17

antennae

Question 18

body part that can be regrown by starfish

Answer 18

ray

Question 19

True or False

Phylum Mollusca has relatively few species compared to the other animal phyla

Answer 19

False

Question 20

True or False

An octopus can change its color

Answer 20

True

Question 21

True or False

The blood of grasshoppers, like that of most insects, is red

Answer 21

False

Question 22

True or False

Insects can sometimes be killed by spraying them with oils or dusts that cover or clot their spiracles

Answer 22

True

Question 23

True or False

A maggot is the larval stage of the beetle

Answer 23

False

Question 24

An arthropod’s muscles are attached to the inside of this ____________

Answer 24

exoskeleton