Question

what would happen to a plant if you were to put petroleum jelly on the leaves? how about olive oil?

Answer 1

If you cover the leaves of healthy plant with vaseline, it will block its stomata and therefore it will not remain healthy for a long time. This is because plant will not get oxygen for respiration. ... The plant will not lose water through transpiration so the upward movement of the water in the plant will stop.

Answer 2

What may happen if the under surface of a green leaf is coated with a thin layer of vaseline? Accepted Answer: If the under surface of leaf is coated with vaseline , it will block the stomata which prevents gaseous exchange through leaf.