Question

leaves of healthy potted plants were coated with jelly.how will it affect the plant

Answer 1

This will block the stomata of the leaf and will not let it make the food for the plant. So the plant will die.

Answer 2

If the leaves of healthy potted plants were coated with jelly than it will cover stomata by which the plant will not able to open or close by which the plant will not be able to do respiration and also transpiration.So, the plant will die.