Unit #5 Quiz #3

Grade:«grade»

Subject:Aquatic Science

Date:«date»

1 Crustaceans have which type of skeleton:

A endoskeleton

B exoskeleton

C hydrostatic skeleton

D axial skeleton

2 Which of the following best demonstrates the importance of the nacreous layer:

A These cells form the “teeth” that protrude from the radula

B These cells secrete a smooth internal shell layer

C These cells become the strong muscles of the foot

D These cells secrete venom that is used by cephalopods to paralyze their prey

3 The terminal end of the excretory system found within most crustaceans is located on the:

A Ventral portion

B Posterior portion

C Dorsal postion

D Anterior portion

4 Which of the following is used to walk across the benthic zone in search of food:

A

B

C

D

5 The root terms for Arthro-pod means:

A joint foot

B large claw

C foot club

D joint head

6 The hypothetical ancestral mollusk is best defined as:

A A hypothetical primitive ancestor that has characteristics found in most modern mollusks

B A hypothetical modern ancestor that has characteristics found in most modern mollusks

C The newest known mollusk

D The oldest known mollusk

7 The name for the circulatory organ that pumps fluid throughout a crustacean is know as a(an):

A hemo heart pump

B blood lymph pump

C hemolymph pump

D heart

8 Approximately what percentage of all known animal species are considered Arthropods.

A 98%

B 85%

C 55%

D 15%

9 Which of the following is used to make a quick escape & fling substate at a threat:

A

B

C

D

10 The mantle secretes:

A Digestive enzymes

B The foot that is used for mobility & digging

C The cells that become the coelom (pericardium)

D Calcium carbonate that forms the shell

11 The animal in the following pictures represents _________.

A asymmetry

B radial symmetry

C bilateral symmetry

D hexamerism

12What compound makes up the exoskeleton of arthropods?

A calcium carbonate

B spongin

C spicules

D chitin

13 The visceral mass contains:

A The radula and the foot

B The nervous tissue responsible for cephalization

C The cells that secrete the shell

D The internal organs

14 Echinoderms have which type of skeleton:

A endoskeleton

B exoskeleton

C hydrostatic skeleton

D axial skeleton

15You reach into a tank and poke a brittle star fish. It responds by quickly moving under a nearby rock and curling into a ball. The brittle star responded to your touch because of which of the following receptors:

A Photoreceptor

B Chemoreceptor

C Statocyst

D Thigmoreceptor

16 Brittle stars and sea stars differ in their modes of movement in that:

A Sea stars can push water out of their mouth to lift themselves off of a surface and push themselves onto another, whereas s brittle star must climb up the same object

B Brittle stars use hydraulics within their tube feet to suction onto a surface and hold there for a long period of time, while sea stars drag themselves across a surface with tube feet that resemble spines

C Brittle stars use their tube feet to slide across a surface similar to the motion of a hover craft

D Sea stars use hydraulics within their tube feet to suction onto a surface and hold there for along period of time, while brittle stars drag themselves across a surface with tube feet that resemble spines