Zoo Unit 2.1 Vocab

Front

Sessile

Back

Organisms that are fixed in one place and do not move.

Front

Intracellular Digestion

Back

The process of breaking down food within cells.

Front

Spongin

Back

A protein that forms the fibrous skeleton of certain sponges.

Front

Spicules

Back

Small, needle-like structures made of calcium carbonate that provide support in sponges.

Front

Pinacocytes

Back

Flat cells that form the outer layer of a sponge.

Front

Porocytes

Back

Tubular cells that allow water to flow into a sponge.

Front

Choanocytes

Back

Flagellated cells in sponges that help in water circulation and food capture.

Front

Spongocoelom

Back

The central cavity of a sponge.

Front

Ameobacyte

Back

Mobile cells in sponges that distribute nutrients and aid in reproduction. Can form into sperm or egg.

Front

Holdfast

Back

A structure that anchors an organism to a surface.