Which of the following is produced during water stress and cause closure of stomata?
a) cytokinin
b) ABA
c) ATP
d) Heat
Phenyl mercuric acetate
a) reduced transpiration
b) reduced photosynthesis
c) increase respiration
d) increase translation
The rate of transpiration is depend upon
a) vapour pressure deficit
b) temperature
c) light
d) air
A specialized multicellular structure in leaves which excretes water droplets is
a) lenticeles
b) hydathode
c) cortex
d) xylem
Increase in the CO2 concentration of micro environment of leaf would cause
a) closure of stomata
b) open of hydothode
c) xylem
d) none of these
Which one of the following factor is the most important the regulation of transpiration?
a) humidity
b) light
c) water
d) air
B is right.
by at 2025-03-28 12:43:36