Question 1

Which of these groups of animals has a true coelom?

Accepted Answer

annelids

Answer

flatworms

Answer

cnidarians

Answer

roundworms

Question 2

A fluid filled body cavity

Accepted Answer

coelom

Answer

ganglion

Answer

setae

Answer

septum

Question 3

an individual organism that has both male and female reproductive organs

Accepted Answer

hermaphrodite

Answer

diatom

Answer

nudibranch

Answer

halfrodite

Question 4

In an earthworm's digestive system, the _____________ grinds food into small pieces.

Accepted Answer

gizzard

Answer

coelom

Answer

radula

Answer

siphon

Question 5

the body of an annelid has

Accepted Answer

segments

Answer

an external shell

Answer

a backbone

Answer

stinging tenticles

Question 6

A type of annelid that is an aquatic external parasite is the

Accepted Answer

leech

Answer

earthworm

Answer

tapeworm

Answer

polychaete

Question 7

The bristlelike structure on some annelids that is used to aid in movement

Accepted Answer

setae

Answer

suckers

Answer

nephridia

Answer

ganglia

Question 8

annelids have a _____________ circulatory system in which blood is contained in a network of blood vessles

Accepted Answer

closed

Answer

open

Answer

water

Answer

free

Question 9

The function of mandibles is to

Accepted Answer

bite and grind food

Answer

walk

Answer

propel swimming

Answer

sense the environment

Question 10

An example of a crustacean   is

Accepted Answer

lobster

Answer

scorpian

Answer

butterfly

Answer

spider

Question 11

An example of a chelicerate is a

Accepted Answer

centipede

Answer

housefly

Answer

crayfish

Answer

spider

Question 12

The skeleton of an echinoderm is an

Accepted Answer

endoskeleton made of calcium carbonate

Answer

exoskeleton made of calcium carbonate

Answer

endoskeleton made of bones

Answer

exoskeleton made of chitin

Question 13

The water vascular system of echinoderms  is involved with each of the following body functions EXCEPT

Accepted Answer

reproduction

Answer

respiration

Answer

movement

Answer

circulation

Question 14

Which of the following habitats do arthropods occupy?

Accepted Answer

all of these

Answer

land

Answer

air

Answer

sea

Question 15

What does molting enable arthropods to do ?

Accepted Answer

grow

Answer

reproduce

Answer

breathe

Answer

eat

Question 16

Arthropods are classified based on the number and structure of their

Accepted Answer

body segements and appendages

Answer

muscles and bones

Answer

gills and hearts

Answer

eyes and wings

Question 17

Insects are classified as

Accepted Answer

uniramians

Answer

echinoderms

Answer

arachnids

Answer

crustaceans

Question 18

The body of an insect is divided into a

Accepted Answer

head, thorax and abdomen

Answer

head and cephalothorax

Answer

cephalothorax and abdomen

Answer

head and thorax

Question 19

Which of the following is NOT a stage of complete metamorphosis?

Accepted Answer

nymph

Answer

larva

Answer

egg

Answer

pupa

Question 20

In echinoderms, body parts usually occur in multiples of

Accepted Answer

five

Answer

three

Answer

two

Answer

seven

Question 21

In an echinoderm, this structure operates as a living suction cup.

Accepted Answer

tube feet

Answer

madreprorite

Answer

stomach

Answer

nerve ring

Question 22

Echinoderms that look like warty, moving pickles

Accepted Answer

sea cucumber

Answer

sea urchins

Answer

sea stars

Answer

sand dollars

Question 23

Insects have ______________ pairs of legs

Accepted Answer

three

Answer

six

Answer

eight

Answer

four

Question 24

an endoskeleton is

Accepted Answer

structural support system located inside the body

Answer

fluid-filled body cavity

Answer

hard body covering made of chitin

Answer

shell

Question 25

Which of the following do NOT have bilateral body symmetry?

Accepted Answer

brittle star

Answer

tick

Answer

earthworm

Answer

millipede

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