The number of gills present in Osteichthyes is

12 pairs

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2 pairs

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5 pairs

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4 pairs

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6-15 pairs

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Solution

The correct option is D
4 pairs

Osteichthyes have 4 pairs of gill slits covered by the operculum.

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Similar questions

	Column-I		Column-II
(a)	Scales and paired fins absent	(i)	Torpedo
(b)	Claspers on pelvic fins of males	(ii)	Cyclostomes
(c)	4 pairs of gills covered with operculum	(iii)	Chondrichthyes
(d)	Electric organs	(iv)	Osteichthyes

Identify the following fishes:

(a) Fish with 5 to 7 pairs of gills ; (b) Fish with air bladder.

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