NEET BIOLOGY

PLANT PHYSIOLOGY

TRANSPORT IN PLANT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following conditions is least likely to increase the rate of transpiration in a plant?
A
a rise in temperature
B
increased air movement
C
an increase in humidity
D
increased sunlight
Explanation: 

Detailed explanation-1: -So, the correct option is ‘High atmosphere Humidity’.

Detailed explanation-2: -During dark, the stomata are closed, and hence transpiration hardly occurs at night. Wind: Transpiration is more when the wind is blowing faster as water evaporates faster from the leaves.

Detailed explanation-3: -Plants transpire more rapidly in the light than in the dark. This is largely because light stimulates the opening of the stomata (a mechanism). Light also speeds up transpiration by warming the leaf. Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.

Detailed explanation-4: -As the relative humidity of the air surrounding the plant rises the transpiration rate decreases. It is easier for water to evaporate into dryer air than into more saturated air. Increased movement of the air around a plant will result in a higher transpiration rate.

There is 1 question to complete.