Q.

Identify the correct statement about cyclostomes.

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a

Gill slits are covered by operculum

b

They are predaceous with circular mouth and paired fins

c

Endoskeleton is made of cartilage

d

Lampreys are exclusively marine animals.

answer is C.

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Detailed Solution

Cyclostomes have cartilaginous endoskeleton. They lack operculum (bony fishes possess operculum). They are predaceous with circular mouth and unpaired fins. Lampreys are migratory. Hagfishes are exclusively marine.

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