Question

Assertion: species is a genetically closed system
Reason:because the reproductive isolation constitutes the most important boundary between different species


the answer to this question is one but I want to know what about mutation?
also species can't be closed system because species takes energy from the surrounding as well as dissipates it


(1) Both Assertion and Reason are true and Reason is the corect explanation of Assertion.
(2) Both Assertion and Reason are true but Reason is not the corect explanation of Assertion.
(3) Assertion is true but Reason is false.
(4) Both Assertion and Reason are false.​

Answer 1

Answer:

option(1) is correct

both assertion and reason is true and reason is correct explanation of assertion

Answer 2

Ans- (1)

Now about mutation see it's any change in the genetic material of an organism ( basically in the nucleotide sequence). Sometimes these small changes helps the species by making it better according to the environment and in some cases it can be fatal too. Now if these small changes(mutation) accumulate for a long period of time can result into a new species.

Now coming to the question why it is closed its because of the genetic pool. Species don't share their genetic pool every species has it's own. So you can say a species is a closed system in terms of genetic information.