Transport in Pl...

Addition of a solute to pure water causes

Wilting of leaves in hot weather is due to

Select the correct events leading to the opening of the stomata
(i) Decline in guard cell solutes
(ii) Lowering of osmotic potential of guards cells
(iii) Rise in potassium levels in guard cell
(iv) Movement of water from neighbouring cells into guard cells
(v) Guards cells becoming flaccid

Osmoscope is used for

Who had said that ''transpiration is a necessary evil''?

By which process atmospheric temperature is maintained?

Root hair absorb water from the soil on account of

In plants, water supply is due to

In both transpiration and evaporation, water is lost in the form of vapour yet they differ, because

Which of the following plants economizes transpirational loss of water?