Animal Kingdom Question 680

Question: Which of the following animals has a nervous system but no brain [CBSE PMT 2002; BVP 2002]

Options:

A) Pheretima

B) Hydra

C) Amoeba

D) Periplaneta

Show Answer

Answer:

Correct Answer: B

Solution:

Hydra possesses a very primitive nervous system consisting of a synaptic network of bipolar and multipolar nerve cells.

Thus, hydra has a nervous system but no brain.