First slide

Basis of Classification

Question

The body of Hydra

Easy

A

can be divided into two equal halves in only one plane
B

can be divided into two equal halves by any plane that passes through the central axis
C

cannot be divided into two equal halves by any plane
D

can be divided into two equal halves by only five planes that passes through the central axis

Solution

Hydra (Cnidaria) exhibits radial symmetry. So, it can be divided into two equal halves by any plane that passes through the centre.

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