Mollusks short test

 

True or False.  Explain why is false.

1. Mollusks are nonliving things.

2. Mollusks have procarytic cells.

3. The phylum mollusks and the phylum Anelida belong to the same kingdom Metazous.

4. Mollusks are invertebrate animals.

5. Mollusks have no vertebrae.

6. Molluscs are heterotrophic and single-celled.

7. Squid, clams, and snails are examples of mollusks.

8. Clams have an open circulatory system.

9. Octopuses have an open circulatory system.

10. Adult mollusks exhibit bilateral symmetry and are not segmented.

Choose the correct answer-

1. The phylum mollusk means soft body and they have:

A) muscular foot and a mantle that secretes calcium.

          B) a three-part segmented body.

         C) spines all over his body.

D) silvery scales that reflect light.