$A$ farmer was facing the problem of low yield from his farm. He was advised to keep a beehive in the vicinity. Why? How would the beehive help in enhancing yield?

(N/A) Bees are the pollinators of many of our crop species such as sunflower,$Brassica$,apple,and pear. Keeping beehives in crop fields during the flowering period increases pollination efficiency and improves the yield. This is beneficial both from the point of view of crop yield and honey yield.