Which is the action spectrum of transpiration?
a) green and ultraviolet
b) orange and red
c) blue and far red
d) blue and red
Water of guttation is………..
a) pure water
b) water with dissolved salts
c) solution of organic food
d) conduct water vapors
The actual amount of moisture retained by the air is called…………
a) absolute humidity
b) positive humidity
c) relative humidity
d) differential humidity
The condition under which transpiration would be most rapid………
a) high humidity
b) more soil in water
c) high temperature and low humidity
d) high wind velocity
If the stomata more on the under surface of the leaves than on upper, it comes under……….
a) oat type
b) barley type
c) pea type
d) potato type
Which of the following is used to determine the rate of transpiration in plants…………
a) porometer
b) potometar
c) auxanometer
d) photometer
