Assertion: Spontaneous mutations occur without any mutagenic agent..
Reason: Induced mutations are caused by mutagenic agents.
a. Both assertion and reason are true, and the reason is the correct
explanation of the assertion.
b. Both assertion and reason are true, but the reason is not the correct
explanation of the assertion.
c. Assertion is true but reason is false.
d. Both assertion and reason are false
Answers
Answer:
Spontaneous mutations occur without exposure to any obvious mutagenic agent. Sometimes DNA nucleotides shift without warning to a different chemical form (know as an isomer) which in turn will form a different series of hydrogen bonds with it's partner. This leads to mistakes at the time of DNA replication.
a) A. Both assertion and reason are true and reason is the correct explanation of assertion.
b) Plants, animals, and microbes are interdependent. This makes the ecosystem self-regulating and self-sustaining with all the components of the ecosystem. So, the correct answer is option A. Both assertion and reason are true and reason is the correct explanation of assertion
c) On the other hand if the assertion and reason both are individually true but the reason does not support the statement given in the assertion correctly, then our answer will be option B. Sometimes the assertion is true and reason is false or vice versa.
d)
On the other hand if the assertion and reason both are individually true but the reason does not support the statement given in the assertion correctly, then our answer will be option B. Sometimes the assertion is true and reason is false or vice versa.