1. Which of the following is a characteristic feature of sponges ?
A. Tissue level of organization
B. Presence of ostia
C. Extra ccllular digetion
D. Indirect deveplopment
Answer : Option B
2. Collar cells are found in
3. The canal system is characteristic feature of
4. Which of the following phylum animals are mostly found in marine water but few are in freshwater.
5. Skeleton is made up of .......... in porifera.
6. Cavity of coelenteratcs is called
8. Which animal has a cylindrical form
9. Which animal is umbrella-shaped and free swiming .........
10. Which of the following is rightly matched ?
A. hysalia - portuguese man of war
B. pennatula - sea fan
C. Adamsia - sea-pen
D. aorgonia - sea anemone
Answer : Option A