unit #5 quiz #3 grade: «grade» subject: aquatic science date: «date»
TRANSCRIPT
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
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%
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