The stomatal transpiration almost completely stops at
a) night
b) noon
c) in morning
d) evening
The magnitude of water loss as a result of transpiration will be greater when
a) leaf area is greater
b) increase in temperature
c) increase in wind velocity
d) all of these
Stomata can open at night also in
a) xerophytes
b) gametophytes
c) hydrophytes
d) none of these
Who had said that ‘transpiration is necessary evil’?
a) Curtis
b) steward
c) Anderson
d) Robert brown
Wilting of plants occurs in due to
a) root pressure
b) transpiration
c) guttation
d) photosynthesis
Which of the following helps in opening of stomata?
a) Potassium ions
b) NaCl
c) Cl ion
d) H2 ions
