Poriferans and Cnidarians

Unlike nearly all other animals, they lack true tissues

• Poriferans

• Cnidarians

These animals have a diplobastic, radially symmetrical body plan.

• sponges

• cnidarians

An example of the polyp form of cnidarian.

• jellies

• sea anemones

They are all hermaphrodite.

• sponges

• cnidarians

The motile, free-swimming cnidrians include ____________.

• jellyfish

• hydras

The cells inside a sponge that both pump water and catch food particles.

• choanocytes

• amoebocytes

They live as suspension feeders, trapping particles that pass through the internal channels of their bodies.

• sponges

• sea anemones

They are an ancient phylum of eumetazoans.

• poriferans

• cnidarians

They have diversified into a wide range of sessile and motile forms.

• poriferans

• cnidarians

Cells unique to cnidarians that function in defense and prey capture.

• choanocytes

• cnidocytes