Self-Test

Try Answering these questions by yourself!

1. Sponges have these all over their bodies:
a) feathers
b) Pores
c) Scales

2. Sponges mainly live
a) In oceans and seas
b) In volcanoes
c) On mountains

3. Sponges are more than one cell
True/False

4. Sponges circulation consists of
a) a heart and blood vessels
b) Just a heart
c) Canals going to all cells

5. When two living things live off of each other, this is called
a) Competition
b) Symbiosis
c) Reproduction

6. A sponge has
a) Asymmetry
b) Raidal symmetry
c) Bilateral symmetry

7. Which of these is not a use of sponges by man?
a) For sponges
b) For medicine
c) For building material

8. The sponge skeleton is made of
a) Chitin
b) Calcium
c) Lime