Hydra Anatomy Flashcard

Front

Where is the mouth located on a hydra?

Back

At the center of the tentacles.

Front

What is the gastrovascular cavity in a hydra?

Back

It is the central digestive cavity where digestion and nutrient distribution occur.

Front

What level of organizational complexity do cnidarians possess?

Back

Tissue level.

Front

Which cnidarian structure is responsible for sensory functions?

Back

Nerve net.

Front

What is the ectoderm in a hydra?

Back

It is the outer layer of cells that forms the skin and nervous system.

Front

What is mesoglea in cnidarians?

Back

It is the jelly-like substance found between the ectoderm and endoderm.

Front

What are tentacles in a hydra?

Back

They are elongated structures used for capturing prey and sensing the environment.

Front

What is the function of the basal disk in a hydra?

Back

It is the structure that anchors the hydra to a substrate.

Front

What are cnidocytes?

Back

Specialized cells in cnidarians that contain stinging structures called nematocysts.

Front

What is the role of nematocysts?

Back

They are used for capturing prey and defense by injecting toxins.