Flaps in fish are present on other side of ...

Head

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Trunk

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Tall

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Eyes

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Solution

The correct option is C Tall
Most fish rely on gills to take in oxygen. Gills can be covered with flaps, hidden under slits, or carried externally.
Covered gills are typically cover in gills with a flap called an operculum leaving one opening at the flap on each side of the fish's head.
So, the correct option is 'Tall'.

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