Which of the following has no effect on the rate of transpiration?
Option: 1
Sunken stomata
Option: 2
Thick cuticle
Option: 3
Leaf area
Option: 4
None of these
Answers (1)
The sunken stomata reduce the rate of transpiration by providing an area where little air movement occurs. Cuticular transpiration decreases with the thickness of cuticle and cutinisation of epidermal walls. A plant with large leaf area will show more transpiration than another plant with less leaf area. Hence, the correct answer is option d.