Select the Incorrect statements with respect to Cyclostomes: (a) They lack scales and paired fins. (b) They…
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) and (b) only
(b) and (c) only
(b) and (d) only
(a) and (d) only
Solution
Cyclostomes are jawless thus option with jawed behaviour is not correct.
They normally live in marine water but for spawning they move to fresh water.
$\rightarrow$ They are scaleless and contain paired fins.