1. Flagellated cells, which line the spongocoel in Poriferans are known as

2. Which of the following is not a characteristic of the phylum Arthropoda?

3. This is an example of bilaterally symmetrical and triploblastic animal

4. Phylum Annelida is not characterized by

5. Which of the following contains notochord in the embryonic stage?

6. A characteristic feature, which is present only in the phylum Coelenterata is

7. Cnidarians, which exhibit only polyp stage

8. Excretion is performed by _______ in flatworms

9. The group of molluscs, which possess eyes similar to vertebrates

10. Tube feet are found in