Question

Select the correct option in respect of characteristic of each group.

	Cydostomes	Chondrichthyes	Osteichthyes
(i)	Sucking mouth	Ventral mouth	Terminal mouth
(ii)	Scales absent	Placoid scales	Cydoid/Ctenoid scales
(iii)	Marine	Marine	Marine and freshwater
(iv)	6-15 pairs of gills	5-7 pairs of gills with operculum	4 pairs of gills with operculum

• A. (i) and (ii) are correct
• B. (i) and (iv) are correct
• C. Only (iii) is correct
• D. All are correct

Answer 1

Answer: (D)

Correct answer is (d) All are correct