First slide

Classification of Animals

Question

Which of the following migrates from sea to fresh water for spawning?

Easy

A

Petromyzon
B

Scoliodon
C

Branchiostoma
D

Ascidia

Solution

Petromyzon is marine but migrates for spawning (to fertilise and reproduce young ones in large numbers usually) to freshwater. After spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean.

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