Unit 7: Simple Invertebrates

Front

This form of cnidaria is known as a __________.

Back

polyp

Front

Sea anemones have a symbiotic relationship with __________.

Back

clownfish

Front

The head region of the dog is called the __________.

Back

anterior

Front

Which worm lives in the intestine of humans and can get up to 30 feet long?

Back

tapeworm

Front

These belong to phylum ____________.

Back

porifera (sponges)

Front

What is the primary characteristic of phylum Porifera?

Back

They are multicellular organisms that lack true tissues and organs.

Front

What is a defining feature of cnidarians?

Back

They possess specialized cells called cnidocytes that contain stinging structures.

Front

What type of symmetry do most invertebrates exhibit?

Back

Radial or bilateral symmetry.

Front

What is the function of the gastrovascular cavity in cnidarians?

Back

It serves both digestive and circulatory functions.

Front

What is the main difference between a medusa and a polyp?

Back

Medusa is free-swimming and bell-shaped, while polyp is sessile and cylindrical.