Animal Kingdom – Phylum Porifera, Cnidaria, Ctenophora, Platyhelminthes

Grade 11 Biology — Animal Kingdom – Phylum Porifera, Cnidaria, Ctenophora, Platyhelminthes: 25 practice questions with instant scoring and explanations.

1. Sponges belong to the phylum:
2. Sponges show which level of body organisation?
3. Water current in sponges is maintained by specialised cells called:
4. The canal system is a characteristic feature of:
5. Water enters a sponge through:
6. Water leaves a sponge through the:
7. Sponges reproduce asexually by:
8. An example of a freshwater sponge is:
9. Cnidaria are characterised by the presence of:
10. The two body forms in many cnidarians are:
11. Hydra belongs to the phylum:
12. Coral reefs are built mainly by:
13. The symmetry of cnidarians is:
14. Ctenophores are commonly called:
15. Locomotion in ctenophores is by:
16. Bioluminescence is well known in members of:
17. Flatworms belong to the phylum:
18. Excretion in flatworms is carried out by specialised cells called:
19. Which of these is a parasitic flatworm?
20. Platyhelminthes are:
21. Cnidaria are:
22. In flatworms, the body is:
23. Fertilisation in most sponges is:
24. Polyps reproduce asexually mostly by:
25. A sedentary body form fixed to the substratum in cnidarians is the: