Unit 1 - Taxonomy, Porifera, & Cnidaria

Front

What is Taxonomy?

Back

Taxonomy is the science of classification of living organisms into groups based on shared characteristics.

Front

What are the main characteristics of Porifera?

Back

Porifera, or sponges, are characterized by their porous bodies, lack of true tissues, and the ability to filter feed.

Front

What is the defining feature of Cnidaria?

Back

Cnidaria are defined by the presence of cnidocytes, specialized cells that contain stinging structures called nematocysts.

Front

What are the two main body forms of Cnidarians?

Back

The two main body forms of Cnidarians are the polyp (sessile) and the medusa (free-swimming).

Front

Describe the polyp body form of Cnidarians.

Back

The polyp body form is sessile, with the mouth and tentacles oriented upward.

Front

What is the outermost layer of Porifera called?

Back

The outermost layer of Porifera is called the epidermis.

Front

What is the jelly-like layer found in the body walls of a sponge?

Back

The jelly-like layer found in the body walls of a sponge is called mesohyl.

Front

What type of organism is classified as multicellular?

Back

An organism made up of more than one cell is classified as multicellular.

Front

What is the function of nematocysts in Cnidarians?

Back

Nematocysts are used for capturing prey and defense against predators.

Front

What are the main classes of Cnidaria?

Back

The main classes of Cnidaria include Hydrozoa, Scyphozoa, and Anthozoa.