Test 3 From Practice Tests

Question 0

The phylum ___ live in water, are sessile, and have choanocytes.

Answer 0

Porifera

Question 1

All animals are multicellular and ___.

Answer 1

Heterotrophic

Question 2

Cnidarians occur in two basic body forms: polyp and ___.

Answer 2

Medusa

Question 3

Stationary mobilia have feeding polyps and ___ polyps.

Answer 3

Reproductive

Question 4

The gastrovascular cavity of a Hydra has how many openings?

Answer 4

One

Question 5

Unique to Cnidaria are specialized stinging cells called ___.

Answer 5

Nematocysts

Question 6

Flatworms belong to what phylum?

Answer 6

Platyhelminthes

Question 7

Planaria is ___, which means they possess both male and female sex organs.

Answer 7

Hermaphroditic

Question 8

What organ of the planaria reminded early investigators or a flickering candle?

Answer 8

Flame cells

Question 9

Tapeworms have a hook and sucker structure called a __.

Answer 9

Scolex

Question 10

___ are animals that have a body cavity completely lined with mesoderm.

Answer 10

Celomates

Question 11

Loligo belongs to which phylum?

Answer 11

Mollusca

Question 12

How many parts does the squid have?

Answer 12

Three

Question 13

Is the circulatory system of the squid open or closed?

Answer 13

Closed

Question 14

When observing the external anatomy of the earthworm, the enlarged section is called a ___.

Answer 14

Clitellum

Question 15

The earthworm is a scavenger and feeds on ___.

Answer 15

Detritus

Question 16

Earthworms are sexual ___.

Answer 16

Hermaphrodites

Question 17

Our incision was made along what surface of the earthworm?

Answer 17

Ventral

Question 18

Arthropods have paired, jointed appendages and hard exoskeletons that contain ___.

Answer 18

Chitin

Question 19

Crayfish belong to the phylum Arthropoda, class __.

Answer 19

Crustacea

Question 20

Five things that go across the heart in the earthworm.

Answer 20

Aortic arch

Question 21

Animals we’ve been examining since last test.

Answer 21

Protostomes

Question 22

Echinoderms are classified as ___.

Answer 22

Deuterostomes

Question 23

Clam part used for locomotion.

Answer 23

Foot

Question 24

How are crayfish and grasshoppers related?

Answer 24

They are Arthropods

Question 25

Echinoderms exhibit ___ symmetry.

Answer 25

Radial

Question 26

Ecdysis refers to ___ in Arthropods.

Answer 26

Molting

Question 27

___ refers to often, drastic change in form and shape.

Answer 27

Metamorphosis

Question 28

Lab book states chordates have four parts, name two

Answer 28

• dorsal tubular nerve cord
• notochord
• postnatal tail
• pharyngeal pouches that become hill slits