Questions in plant-water-relation

Select	Question
	Transpiration efficiency is the ratio of
	Path of greater resistance in transpiration is
	If $rc$ and $rs$ respectively represents cuticular and stomatal resistances, the total resistance ($R$) could be expressed as
	When strips of chloride papers are placed on either side of a dorsi-ventral leaf, why the strips on the lower side become speedily pink ? Because
	Unequal loss of water from two surfaces of a dorsi-ventral leaf can be determined by
	Which of the following plants economises transpirational loss of water
	The trunk of a tree shrinks in day due to
	Grafted flower is contained in saline water because
	In plants, movement of water against gravitational force is due to
	Sunken stomata are adaptations of which category of plants