The Living World Question 90

Question: Assertion : Evolution of man is the example of progressive evolution. Reason : Tapworm is developmed due to retrogressive evolution.

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: B

Solution:

Progressive evolution is the formation of more complex specialized organisms from simple and less elaborate forms.

Examples : evolution of amphibians from fish like ancestors and evolution of birds and mammals from reptile-like ancestors.

Retrogressive evolution is the formation of simple and less elaborate forms from more complex and specialized ones.

Example : evolution of many parasitic organisms like tape worm which does not have digestive system.

It absorbs food through body surface.