Sponge Structure and Function Quiz

Which of these cell types is responsible for generating water flow in sponges?

Sponges have a true digestive system comprised of specialized organs.

What is the name of the jelly-like substance found within the sponge's body, containing various cells and acting as a type of endoskeleton?

The large opening at the top of a sponge through which water is expelled is called the ______.

Match the following sponge cell types with their primary functions:

Sponge Structure and Function

Sponges have numerous pores (ostia) and a large opening (osculum) for water flow.
Water enters through ostia and exits through the osculum.
Cells that filter food from the water are located in the sponge's body wall.
Sponges exhibit diverse body forms (variations in the size of the spongocoel, number of osculi, placement of cells filtering food).
The spongocoel is the central cavity within the sponge.

Sponge Cell Types

Pinacocytes: Epithelial-like cells forming the outermost layer.
Mesohyl: Jelly-like substance (extracellular matrix) containing collagen-like gel and suspended cells.
Choanocytes: Cells responsible for intracellular digestion and creating water flow.

Sponge Feeding

Sponges lack a true digestive system.
Choanocytes are responsible for filtering food from the water and intracellular digestion.
Water flow creates a current for the ingestion of food particles.

Sponge Skeletal Structure

Sponges have an endoskeleton composed of a collagen-like substance called mesohyl.
Some sponges have a variety of specialized cells and tubes that help regulate the flow of water.

Test your knowledge on the structure and function of sponges. This quiz covers the anatomy of sponges, including their cell types, feeding mechanisms, and skeletal structures. Dive into the unique adaptations that allow sponges to thrive in aquatic environments.