Read the following statements with respects to rate of transpiration.
I. In dry atmosphere, the relative humidity is low so, the rate of transpiration increases.
II. Slow breeze promotes the rate of transpiration.
III. ABA promotes transpiration.
IV. A high salt concentration in soil water increases transpiration.
Choose the incorrect options.
I and II
II and III
III and IV
I and IV
C.
III and IV
Statement III and IV are incorrect as Abscisic Acid (ABA) inhibits transpiration. This hormone functions in various plant developmental processess, including bud dormancy and ABA-mediated signalling also plays an important part in plant responses to environmental stress and plant pathogens. A high salt concentration in soil reduces the rate of transpiration due to less water absorption.
