Question

Pollen grains of cycas and pinus are pollinated by air in

Answer 1

 3 and 4 celled stage.

Answer 2

Anemophily also n called as wind pollination is a type of pollination whereby the pollen is distributed by the wind. Almost all gymnosperms are anemophilous, as are many plants in the order Poales, including grasses, sedges and rushes. ... Very few varieties of Cycas pollinate with the help of birds as pollinating agents.