Animal Kingdom Question 19
Question: Which one of the following animals possesses nerve cells but no nerves?
Options:
A) Hydra
B) Tapeworm
C) Earthworm
D) Planaria
Show Answer
Answer:
Correct Answer: A
Solution:
Hydra has nerve cells/ganglion cells that are small or elongated having one or more processes.
Even though Hydra has a system of cells specialized for sensory responses such as touch and chemical responses it does not have a well developed system of nerves that are connected.
Instead it has a system of nerve nets that are spread throughout the body and is a simpler organisation. So, the correct answer is ‘Hydra’.
BETA
