Question

Regarding assertion and reason, choose the correct option.
Assertion:Interspecific hybridization often fails to form normal embryos.
Reason: Such embryos can germinate in culture conditions.

• A. Both the assertion and reason are true and the reason is the correct explanation for the assertion.
• B. Both the assertion and reason are true but the reason is not the correct explanation of the assertion.
• C. Assertion is true but the reason is false
• D. Both the assertion and reason are false.

Answer 1

The correct option is B Both the assertion and reason are true but the reason is not the correct explanation of the assertion.

Interspecific hybridization often fails because the embryo dies early and fails to reach maturity. In such cases, the embryo is taken out of the fertilized ovule and cultured over nutrient medium under controlled conditions. This is usually done to obtain high yielding, disease resistant plants.
The correct explanation for failure of interspecific hybridization is because of pre and post fertilization barriers like endosperm abortion or starvation of the hybrid embryo.