While studying transpiration, a scientist used a dentrometer to record the small daily changes in the diameter of a tree trunk at two differnet heights( 2 meters and 3 meters) above the ground at the same time. The diameter decreased in the daytime. This decrease happened first at a higher location. Dicuss the following in relation to water movement in plants.

A) Identify how 2 different environmental factors could be envoled in the daily fluctuations?

B) Discuss the mechanisms involved in the uptake and transport of water by vascular plants?

C) Discuss the role of water in the normal functioning of plants?