Ch 9_Section 3

Question 1

What are the main characteristics of sponges?

Answer 1

1. invertebrate animals
2. that usually have no body symmetry
3. and never have tissues or organs

Question 2

What are the main characteristics of cnidarians?

Answer 2

stinging cells that capture food and defend themselves

Question 3

Why are coral reefs important?

Answer 3

they are home to more species of fishes and invertebrates than any other environment on earth

Question 4

What is the definition for:

larva

Answer 4

an immature form of an animal that looks very different from the adult

Question 5

What is the definition for:

cnidarian

Answer 5

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

Question 6

What is the definition for:

polyp

Answer 6

a vase-shaped body plan (e.g. a sea anemone)

Question 7

What is the definition for:

medusa

Answer 7

bowl-shaped body plan (e.g. jelly fish)

Question 8

What is the definition for:

colony

Answer 8

a group of many individual animals

Question 9

What is the definition for:

coral reef

Answer 9

built by cnidarians that attaches to a solid surface