The fine d roplets os smokes, ashes, dusts, pollen grains etc, suspended in air collectively called____which cause various lung disease.

The line droplets of smokes , ashes ,dusts , pollen grains etc , suspended in air collectively called ______, which cause various lung diseases.

Dust, smoke, pollen etc floating in air we called_______.

Very small particles of dust, smoke, microbes, soil, etc, that are present in air and causes air pollution are called____

If the amount of pollen grains, fungal spores and dust particles increase suddenly in the air, decide which of the following problems may increase-

If the amount of pollen grains, fungal spores and dust particles increase suddenly in the air, decide which of the following problems may increase-

Given below are the events that are observed in an artificial hybridization programme. Arrange them in the correct sequential order in which they are followed in the hybridization programme. (a)re-bagging , (b)selection of parents , (c )bagging , (d)dusting the pollen on stigma , (e)emasculation , (f)collection of pollen from male parent.