2022 Phase 2 Animal KingdomClass Cyclostomata Easy Question 2 of 3 in Class Cyclostomata

Select the incorrect statements with respect to Cyclostomes. (a) They lack scales and paired fins. (b) They have circular mouth with jaws. (c) They bear 6-15 pairs of gills. (d) They migrate to deep sea for spawning. Choose the most appropriate answer from the options given below:

A (a) and (d) only
B (a) and (b) only
C (b) and (c) only
D (b) and (d) only

The answer is D.

Solution

(a) and (c) are correct. (b) is incorrect as cyclostomes have a sucking, circular mouth without jaws. (d) is incorrect as they migrate to fresh water for spawning.

Concept Class Cyclostomata

Class Cyclostomata in past papers

3 questions from this chapter have appeared across 3 exam years.