Question

(a) Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reason for your answer.
(b) What will happen to the rate of photosynthesis on a plant under the following circumstances?
(i) cloudy day in morning but bright sunshine in the afternoon
(ii) no rainfall in the area for a considerable time.
(iii) gathering of dust on the leaves

Answer 1

Answer:

The plant could not remain healthy because it cause blockage of stomata, as petroleum jelly will not let the air to pass through and will make the stomata unable to respire and the petroleum jelly absorbs heat this will adversely affect the plant and will harm its leaves and stomata's.