- 1(current)
Q. No.The number of correct statements from the given statements, regarding the members of Class Cyclostomata, is:
a. All living members are ectoparasites on some fishes.
b. The body bears 6-15 pairs of gill slits for respiration.
c. They have a sucking and circular mouth without jaws.
d. Their body is devoid of scales and paired fins.
e. Cranium and vertebral column are bony.
f. Circulation is of open type.
a. All living members are ectoparasites on some fishes.
b. The body bears 6-15 pairs of gill slits for respiration.
c. They have a sucking and circular mouth without jaws.
d. Their body is devoid of scales and paired fins.
e. Cranium and vertebral column are bony.
f. Circulation is of open type.
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
Subtopic: Â General Introduction: Vertebrates & Agnatha |
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Regarding reproduction in Cyclostomes:
1. Only II is correct
2. Only I and II are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | They are marine but migrate for spawning to fresh water. |
| II: | After spawning, within a few days, they die. |
| III: | Their larvae, after metamorphosis, return to the ocean. |
2. Only I and II are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Â General Introduction: Vertebrates & Agnatha |
 92%
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- 1(current)
Q. No.
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