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|
| 11. |
Canal system is characteristic of: |
| A. |
Sponges |
B. |
Coelentrates |
| C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option A
Explanation:
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| 12. |
Habitat of sponges is: |
| A. |
Mostly marine |
B. |
Mostly fresh water |
| C. |
Terrestrial |
D. |
None of these |
Answer: Option A
Explanation:
|
| 13. |
Fresh water sponges belong to the family: |
| A. |
Arcellinidae |
B. |
Spongillidae |
| C. |
Choristidae |
D. |
Asconidae |
Answer: Option B
Explanation:
|
| 14. |
A sponge can be distinguished from other animals by the presence of: |
| A. |
Hollow body |
B. |
Dermal papillae |
| C. |
Coelenteron |
D. |
Choanocytes |
Answer: Option D
Explanation:
|
| 15. |
Pinacocytes are found in the body of |
| A. |
Sponges |
B. |
Snails |
| C. |
Rabbits |
D. |
Hydras |
Answer: Option A
Explanation:
|
| 16. |
The cavity common to all types of canal systems is: |
| A. |
Incurrent canal |
B. |
Excurrent canal |
| C. |
Radial chamber |
D. |
Spongocoel |
Answer: Option D
Explanation:
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| 17. |
Sponges possess: |
| A. |
Epithelial tissue only |
B. |
No tissues |
| C. |
Epithelial and connective tissues |
D. |
All four types of tissues |
Answer: Option B
Explanation:
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| 18. |
Tissues are not found in: |
| A. |
Corals |
B. |
Sponges |
| C. |
Jelly-fishes |
D. |
Star-fishes |
Answer: Option B
Explanation:
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| 19. |
Flagellated cells in sponges are called: |
| A. |
Choanocytes |
B. |
Pinacocytes |
| C. |
Porocytes |
D. |
Thesocytes |
Answer: Option A
Explanation:
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| 20. |
Sponges are characterized by the presence of: |
| A. |
Canal system |
B. |
Choanocytes |
| C. |
One exit and many mouthlets |
D. |
All of these characters |
Answer: Option D
Explanation:
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