Question

(a) Leaf A was coated with grease on both the surfaces.
(b) Leaf B was coated with grease on the lower surface.
(c) Leaf C was coated with grease on the upper surface.
(d) Leaf D was left without any application of grease.
All the four leaves A, B, C and D were left in a room for
about 24 hours.
(i) Which leaf dries first ? Give reason.
(ii) Which leaf dries last ? Give reason

Answer 1

Answer:

i. Leaf D dries first, ii. Leaf A dries last

Explanation:

i. Leaf D dries first because the coating of grease was not present to reduce the transpiration and hence water loss took place while in others they were coated at least partially or fully hence reducing transpiration.

ii.Leaf A dries last because the coating of grease reduced transpiration drastically and did not allow water loss

Hope it helps

Answer 2

Explanation:

1. leaf D dries first

2.Leaf A dries last