Assertion: Keeping beehives in crop fields during the flowering period can increase crop yield.
Reason: Bees visiting flowers for nectar collection also aid in the transfer of pollen from one flower to another, thereby promoting pollination.
Both assertion and reason are true, and the reason is the correct explanation of the assertion.
Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
The assertion is true, but the reason is false.
The assertion is false, but the reason is true.
Keeping beehives in crop fields during the flowering period can indeed increase crop yield. Bees are known to visit flowers in search of nectar and in the process, they aid in the transfer of pollen from one flower to another. This is known as cross-pollination, and it is crucial for the fertilization and subsequent development of many crops. Thus, by keeping beehives in crop fields during the flowering period, farmers can ensure that there are enough bees to promote pollination, resulting in increased crop yield. The assertion is true and the reason provides a correct explanation of why this is the case. Therefore, the correct answer is option 1.