AP Biology Chapter 33

Central Cavity of the Sponge

Collar cells that line the spongocoel and create water flow through the sponge.

Large opening of the sponge

Gelatinous region that separates the two cell layers of the sponge body.

Structures that gather food from the water in the sponge, digest, and bring nutrients to other cells.

Structures on tentacles that help a Cnidarian defend itself or capture prey.

Organelles that sting prey.

The head of the flatworm.

Segment that contains eggs of the tapeworm.

Method of Locomotion for Molluscs. Muscle used for movement.

Jaws in the pharynx of a Rotifera to capture and breakdown food.

Mass where majority of organs are kept in the Molluscs.

Part of the Mollusc that secretes the shell and protects the visceral mass.

Strap like rasping organ to scrap up food. Used for feeding.

Organisms that possess both male and female sex organs.

Organ that secretes a mucous cocoon when an earthworm receives a sperm.

Feet like appendages used for locomotion in an earthworm.

Series of semi-repetitive segments.

Network of hydraulic canals branching into extentions in order to aid in locomotion, feeding and exchanges of gases.