Chapter 12 Test

Question 1

No invertebrate has a

Answer 1

backbone

Question 2

This phylum has the most animal species

Answer 2

Arthropoda

Question 3

Flatworms have this type of symmetry

Answer 3

bilateral

Question 4

This characteristic distinguishes earthworms from worms in other phyla

Answer 4

segmened body

Question 5

Octopus use these to move quickly through the water

Answer 5

siphon

Question 6

The tiny bristles that an earthworm uses for movement

Answer 6

setae

Question 7

Clams obtain food by

Answer 7

filtering it from the water

Question 8

The chamber in an earthworm’s digestive system that temporarily stores food

Answer 8

crop

Question 9

The chamber in an earthworm’s digestive system that grinds food during mechanical digestion

Answer 9

gizzard

Question 10

Animals such as clams that have two shells hinged together

Answer 10

bivalves

Question 11

Part of the body that sponges have

Answer 11

spicules and spongin

Question 12

Arthropods have

Answer 12

exoskeletons

Question 13

Animals

Answer 13

• are eukaryotic
• are consumers
• reproduce sexually

Question 14

Some insecticides work by blogging the insect’s __________ so they can’t breathe

Answer 14

spiracles

Question 15

Organisms that have both male and female reproductive structures in the same body

Answer 15

hermaphroditic

Question 16

Earthworms have a __________ circulatory system

Answer 16

closed

Question 17

Earthworms carry on respiration this way

Answer 17

through their skin

Question 18

Brown tube sponge

Answer 18

Porifera

Question 19

Honeybee

Answer 19

Arthropoda

Question 20

Planarian

Answer 20

Platyhelminthes

Question 21

Box Jellyfish

Answer 21

Cnidaria

Question 22

Earthworm

Answer 22

Annelida

Question 23

A type of skeleton similar to a water balloon

Answer 23

hydrostatic

Question 24

A stinging cell of a hydra or jellyfish

Answer 24

nematocyst

Question 25

The resting stage of insect development

Answer 25

pupa

Question 26

A tube that transports gases inside insects

Answer 26

trachea

Question 27

An outer opening of an insect's gas exchange system

Answer 27

spiracle

Question 28

A collection of nerve tissue, called a "simple brain"

Answer 28

ganglion

Question 29

An insect's life cycle, which includes changes in body form

Answer 29

metamorphosis

Question 30

Structures that control blood pressure in an earthworm

Answer 30

aortic arches