Question

disadvantages of pollen grains to humans please reply as soon as possible​

Answer 1

Hi mate ,

here is your answer

Explanation:

Disadvantages of cross pollination: It is not always certain as a pollinating agent is always required, and it may or may not be available at the suitable time. Pollen grains have to be produced in abundance to ensure chances of pollination

Answer 2

Answer: Pollen grains are also called allergens. Means it causes various respiratory ailments like asthma,brochitis etc.

E.g: carrot grass plant ( parthenium ) - dermatitis.