Marine Invertebrates

Sponges "eat" by moving water through the small pores and out the larger pore at the top while the "food" is transported by collar cells. This is an example of what feeding strategy?

• carnivore

• filter-feeding

• suspension feeding

• omnivore

A certain seastar feeds by pushing its stomach out and using stomach acids to dissolve the clam. Since it is feeding on another organism, what feeding strategy would this be?

• omnivore

• carnivore

• detrivore

• filter feeding

This worms body is very flat. What phylum does it belong to?

• Porifera

• Cnidaria

• Mollusca

• Platyhelminthes

Tags

NGSS.MS-LS4-2

An organism that lives attached to a surface or the bottom of the ocean is __________.

• motile

• sessile

• planktonic

• hydrophilic

This animal exhibits...

• Bilateral Symmetry

• Radial Symmetry

• No Symmetry

Answer explanation

Yes, the left and right sides are the same

Which phylum does an octopus belong in?

• Porifer

• Cnidaria

• Mollusca

• Arthropoda

Answer explanation

Yes! It has a soft body and internal "shell"

Tags

NGSS.MS-LS4-2

Which phylum does this anemone belong in?

• Porifer

• Cnidaria

• Mollusca

• Arthropoda

Answer explanation

Yes! it has stinging cells surrounding its mouth

Which phylum does this crab belong to?

• Porifera

• Cnidaria

• Platyhelminthes

• Arthropoda

Answer explanation

Yes, it has a hard exoskeleton (outer skeleton) made of chiton (like your fingernails)

Tags

NGSS.MS-LS4-2

This sandcastle worm uses its feeding tentacles to catch food particles suspended in the water. What is the name of this feeding strategy?

• detritivore

• carnivore

• filter-feeding

• suspension feeding

Tags

NGSS.MS-LS2-3

This sunflower seastar feeds by pushing its stomach out and using stomach acids to dissolve the clam. Since it is feeding on another organism, what feeding strategy would this be?

• detritivore

• carnivore

• filter-feeding

• suspension feeding

Tags

NGSS.MS-LS2-3