Question

On movement of water during transpiration in a tree

Answer 1

There are two different ways by which water is absorbed in plants, diffusion and transpiration pull. Diffusion is quite simple process of taking in water wia root hairs but Transpiration pull is a little complex process.
Transpiration of water from leaves creates a pressure on vesicles to draw water from adjescet cell and thus plant was able to transport water from roots to leave of greater heights. Diffusion alone is insufficient for water transport, thus transpiration pull is the major driving force wor the movement of water in taller plants and trees.