Concept:Transpiration is the loss of water vapour from the aerial parts of a plant, mainly through the leaves.
Explanation:Roots absorb water from the soil.
This water travels upward through the xylem to the leaves.
In the leaves, water evaporates from the mesophyll cells into the intercellular spaces.
It then diffuses out through the stomata as water vapour.
This process is called transpiration.
It occurs on the leaf surface, not the root surface.
It is a loss of water vapour, not absorption of vapour.
It is also more than just the movement of water through the plant.
Answer:A. loss of water in the form of vapour from the surface of the leaf