First slide

Classification of Animals

Question

Study the following features.
A.     Operculum
B.     Claspers
C.     Placoid scales
D.     Poison sting
Which of the above features are present in Torpedo?

Difficult

A

C and D
B

B and C
C

A and B
D

B, C and D

Solution

Torpedo is commonly called electric ray. It is included under the class Chondrichthyes characterised by the presence of placoid scales and claspers (in males). An operculum is absent. A poison sting is present in Trigon (stingray) but not in Torpedo.

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