Question

In early winter mornings we can see drops of water (dew) on the grass. This is because

Answer 1

Guttation occur in plants Removing water through Hydathodes (Chalk gland)

Answer 2

This is because of transpiration in plants.

In transpiration process the plant or tree remove the water which is present in excess. And this process starts from dusk and continue till the dawn.

Not only the water (dew) on grass you also notice the water on the leave of a trees. This is because of transpiration.