What Will Happen If Vaseline Is Applied To The Upper Surface Of A Leaf

Also by doing this will notice that the rate of transpiration is greater on the lower than on the upper surface of the leaf. Investigating the stomatal density on the upper and lower epidermis of leaves experiments. A leaf covered with vaseline on the lower surface wont have any affect as the stomata are being covered with the vaseline but if it were on the upper surface it would shrivel because when a leaf.

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What will happen if vaseline is applied to the upper surface of a leaf. What would happen if vaseline is applied on the lower surface of the leaf. The investigation uses living plants with leaves still attached to the main stem and can either be carried out in the school grounds or can be a lab based investigation see notes on apparatus. He recorded the weight of each plant at the beginning of the experiment. Four dorsiventral leaves of almost similar size and age are selected and vaseline is applied as follows.

A leaf covered with vaseline on the lower surface wont have any affect as the stomata are being covered with the vaseline but if it were on the upper surface it would shrivel because when a leaf. The students will measure the temperature of the upper side of each leaf before and after smearing the lower surface of the leaf with petroleum jelly. The investigation is aiming to look at transpiration. The stomata would be covered and there would be no photosynthesis and transpiration.

Evaporation of water from the stomata cools the leaf surface analysis of results and drawing conclusions there is a significant difference between the mean leaf surface temperature without vaseline on the underside and with vaseline on the underside. A range of different conditions will be used to determine the rate of transpiration in different plants xerophytes and mesophytes. I vaseline is smeared on both the surfaces of the first leaf ii vaseline is smeared on the upper surface of the second leaf iii vaseline is smeared on the lower surface of the third leaf and iv the fourth leaf is kept as such. Vaseline coats the leaf and prevents water loss from the leaf surface.

This is because most leaves. Ruther selected 4 similar leafy plants and applied vaseline onto different parts of the plant.