Write the classification and characteres of chondrichthyes.
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Explanation:
These fish are found only in the marine environment.
The exoskeleton is like placoid scales.
The endoskeleton is cartilaginous.
The jaw suspension is amphistylic.
Gills are the respiratory organs.
The caudal fin is heterocercal.
Claspers are the reproductive organs in males.
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Answer:
Classification of Class Chondrichthyes | Zoology
•The class includes sharks, rays and chimaeras. ...
The skin is tough, possesses minute placoid •scales and mucous glands. ...
•Skeleton cartilaginous and notochord persistent. ...
•The median and paired fins are supported by cartilaginous fin rays. ...
•The tail is heterocercal.
•Ventrally placed mouth with rows of teeth.
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