Biology Test 11

Which group of invertebrates are characterized by a muscular foot, a visceral hump, and a mantle?

• mollusks
• echinoderms
• coelenterates
• segmented worms

What is the outer, skin-like covering of a mollusk that secretes the shell called?

• mantle
• foot
• visceral hump
• mickey

What is a precious stone formed by an oyster in reaction to an irritating particle?

• jewel
• opal
• topaz
• pearl

Clams, oysters, and scallops are examples of what?

• gastropods
• cephalopods
• univalves
• bivalves

What group includes snails, conchs, and nudibranchs?

• gastropods
• bivalves
• echinoderms
• cephalopods

What is the belt-like or file-like scraping organ in the mouth of a snail or slug?

• crop
• tentacle
• radula

What is the only cephalopod with an external shell?

• amoeba
• nautilus
• coral
• euglena
• paramecium

What are the only animals with a water-vascular system?

• flatworms
• echinoderms
• coelenterates
• mollusks

Tags

NGSS.MS-LS4-2

What are animals characterized by spiny skin and radial symmetry?

• rotifers
• sponges
• coelenterates
• echinoderms

What are microscopic, multicellular invertebrates named for the rotating appearance of the cilia on their front ends?

• ciliates
• flagellates
• rotifers
• sea anemones