Assertion: Chondrichthyes swim constantly in water body to avoid sinking.
Reason: In chondrichthyes, air bladder is not found.

Why do chondrichthyes swim constantly?

The members of Chondrichthyes have to swim constantly to avoid sinking due to

Assertion :- Scoliodon (Dog fish) have to swim constantly to avoid sinking. Reason :- It does not have air bladder.

Assertion: Osteichthyes fishes swim constantly to avoid sinking . Reason: Air bladder is absent in fishes of Class Osteichthyes.

Assertion: Osteichthyes fishes swim constantly to avoid sinking . Reason: Air bladder is absent in fishes of Class Osteichthyes.

Assertion: Osteichthyes fishes swim constantly to avoid sinking . Reason: Air bladder is absent in fishes of Class Osteichthyes.

Assertion: Osteichthyes fishes swim constantly to avoid sinking . Reason: Air bladder is absent in fishes of Class Osteichthyes.

What type of endoskeleton is found in chondrichthyes?

Members of Chondrichthyes have to swim continuously , because they

Members of Chondrichthyes have to swim continuously , because they