Porifera

Sponges have these specialized cells with flagella for pumping water.

• tentacles

• choanocytes

• spicules

• amoebacytes

Hard structures unique to each sponge species, some are made of calcium carbonate, others are made of silicon dioxide:

• choanocytes

• spicules

• spiracles

• nematocysts

The opening at the top of a sponge where water comes out.

• osculum

• osteocyte

• spicule

• cnidocyte

These are known to live in both freshwater and saltwater:

• Phylum Porifera

• Phylum Cnidaria

The animals in this group are ALL sessile:

• Phylum Porifera

• Phylum Cnidaria

Organisms in Phylum Porifera and Phylum Cnidaria both feed on various plankton species.

• True

• False

These sponge cells have many jobs, one of which is to produce the spicules:

• choanocytes

• porocytes

• nematocyst

• amoebocytes

Tags

NGSS.MS-LS1-2

Match the following descriptions with the correct biological terms.

• Osculum

• An animal that develops from two germ layers

• Flagellum

• A whip-like tail that creates a water current

• Diploblast

• A cell that makes spicules

• Sclerocyte

• A large opening at the top of a sponge

What role do amoebocytes serve in the nutrient distribution within sponges?

• They produce spicules

• They transport nutrients from choanocytes to other cells

• They create a collar to capture food particles

• They secure the sponge to a substrate

Tags

NGSS.MS-LS1-2

Match the following cell types with their functions in a sponge.

• Choanocytes

• Cells that make spongin

• Oocytes

• Cells that create current in a sponge

• Sclerocytes

• The flat 'skin' cells on the outside of the sponge

• Pinacocytes

• Egg cells