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20 Cards in this Set

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  • Back


Animals that lack a backbone


Animals that possess a backbone


Small capsules that contain a toxin which is injected into prey or predators

Posterior end

The end of an animal that contains its tail


Possessing both the male and female reproductive organs


A sheath of tissue that encloses the vital organs of a mollusk, makes the mollusk's shell, and performs respiration.

What phylum is a sponge in?

Phylum Porifera

What phylum is a snail in?

Phylum Mollusca

What phylum is a jellyfish in ?

Phylum Cnidaria

What phylum is a segmented sea worm in?

Phylum Annelida

What phylum is a flatworm in?

Phylum Platyhelminthes

Are clams univalve or bivalve mollusks?


What do sponges eat and how do they get their food?

They eat algae, bacteria, and organic matter that is in the water by pumping water though their bodies and capturing the food from the water

What is the difference between a hard, prickly sponge and a soft sponge?

Hard, prickly sponge contains spicules while soft sponges contain spogin

Which phylum of animals discussed in this module has nematocysts?

Phylum Cnidaria

An earthworm's seminal vesicles are full. Has it mated yet?

It has not yet mated

What function does the cuticle perform in the earthworm?

Allows it to get oxygen and release carbon dioxide

Two members of phylum Platyhelminthes are studied. The first has a complex nervous system and the second does not. Which one if most likely the parasitic planarian?

the second

What is the most common form of asexual reproduction among the organisms of phylum Cnidaria?


What is the common mode of asexual reproduction among the organisms of phylum Platyhelminthes?