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Bony fishes can stay at any particular d...

Bony fishes can stay at any particular depth in water without spending energy due to presence of

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Bony fishes can stay at a particular depth in water without beating their pectoral and pelvic fins due to the presence of

Bony fishes can stay at a particular depth in water without beating their pectoral and pelvic fins due to the presence of

Bony fishes can stay at a particular depth in water without beating their pectoral and pelvic fins due to the presence of

A bony fish can stay at particular depth in a sea , without expending energy in swimming is , due to the presence of

Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony fishes, the swim bladder is present which helps in buoyancy.

Assertion : A bony fish can stay at a particular depth without expending energy is a swimming contrary to the cartilaginous fishes. Reason : In bony fishes, the swim bladder is present which helps in buoyancy. (a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. (b) If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion. (c) If Assertion is true, but Reason is false (d) If both Assertion and Reason are false.

Permanent hardness in water due to presence of :