Biology 2 Semester 1 Final Review

Front

What are invertebrates that have stinging cells and take food into a central body cavity?

Back

Cnidarians are invertebrates characterized by stinging cells (nematocysts) and a central body cavity for digestion.

Front

What are the stinging cells in predatory cnidarians called?

Back

Nematocysts are specialized cells in cnidarians that contain stinging structures used for capturing prey.

Front

How many legs do arachnids have?

Back

Arachnids have 8 legs, distinguishing them from insects, which have 6.

Front

What is the free swimming, umbrella-shaped body form of cnidarians called?

Back

Medusa is the free-swimming, umbrella-shaped body form of cnidarians, typically with tentacles hanging down.

Front

What is the name of the jellyfish larva?

Back

The jellyfish larva is called a planula, which is a free-swimming larval stage.

Front

What is the primary function of nematocysts in cnidarians?

Back

Nematocysts serve to capture prey and provide defense against predators.

Front

What are the two main body forms of cnidarians?

Back

The two main body forms of cnidarians are the polyp and the medusa.

Front

What type of symmetry do cnidarians exhibit?

Back

Cnidarians exhibit radial symmetry, allowing them to interact with their environment from all directions.

Front

What is the role of the gastrovascular cavity in cnidarians?

Back

The gastrovascular cavity functions in digestion and distribution of nutrients throughout the body.

Front

What are the main classes of cnidarians?

Back

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