Organisms And Population Question 37

Question: Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : Coelenterates and flatworms show morphollaxis regeneration. Reason : In both of these, a body fragment can develop into complete organism.

Options:

A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C) If the assertion is true but the reason is false

D) If both the assertion and reason are false

Show Answer

Answer:

Correct Answer: A

Solution:

Hydra (coelentrates) is cut transversely into two or more parts.

Then they can grew into complete organism of smaller size and planaria (flatworms) can also develop into a complete animal though of smaller size than the parental animal by morphollactic regeneration as in Hydra.