Which organism has a digestive system that consists of a saclike structure that allows materials to flow both in and out?

A.
monkey

B.
fish

C.
hydra

D.
clam

Question

Which organism has a digestive system that consists of a saclike structure that allows materials to flow both in and out?	
 
 A.
monkey
 
 B.
fish
 
 C.
hydra
 
 D.
clam

secret-ninja · Answer

Well, you can start by canceling out the answers that are most obviously wrong. Those would be Monkey and Fish.

anonymous · Answer

ok

secret-ninja · Answer

Sac-like plans are found in many invertebrates, who have a single opening for food intake and the discharge of wastes.

secret-ninja · Answer

Invertebrates do not have spines. Clams are invertebrates, BUT so are Hydras.

anonymous · Answer

Yes I know that.

secret-ninja · Answer

Some animals, known as Filter feeders, such as oysters and mussels, collect small organisms and particles from the surrounding water. What do you think the answer may be?

anonymous · Answer

d clam

secret-ninja · Answer

Good job! You are correct! :D We can prove this just by knowing that Hydras eat by extending their tentacles to grab food. You did great. have an awesome day! :)

secret-ninja · Answer

Also, don't forget to close your question.

anonymous · Answer

Thank You SOOOOOOOOO much for your help!

secret-ninja · Answer

No problem. :]

anonymous · Answer

@Secret-Ninja IT WAS B

secret-ninja · Answer

That's really weird, I did not know that fish did that. I apologize for any inconvenience. It might be referencing to a specific species, but I can't be sure. Sorry.

anonymous · Answer

@Secret-Ninja its alright i can retake the test