Describe the external factors affecting transpiration.

Solution

Extermal factors affecting transpiration are :

1. Temperature : Rate of transpiration is directly proportional to the temperature. Transpiration rate increases with increase in temperature.

2. Light : More light closes the stomata.

3. Relative humidity : Rate of transpiration is inversely proportional to the relative humidity.

4. Velocity of the wind : The rate of transpiration is directly proportional to the velocity of wind. However, the wind of 40-50 km/hr brings closing of stomata and thus decreases the rate of transpiration.

5. Atmospheric pressure : Rate of transpiration is inversely proportional to the atmospheric pressure.

Some More Questions From Transport in Plants Chapter

For Daily Free Study Material Join wiredfaculty

Transport In Plants

Describe the external factors affecting transpiration.

Some More Questions From Transport in Plants Chapter

What is capillarity ?

Name the two forces responsible for the rise of water in a capillary tube.

Which force is first operative in translocation of water through capillarity : cohesive force or adhesive force ?

Name the driving force for water movements in plants.

What are the two factors which affect osmosis?

What is the condition of having more stomata on the lower surface called?

Name the plant having more stomata on lower surface than on upper surface.

Name the plant having equal number of stomata on both surfaces.

Name the substance which has maximum imbibition capacity.

Rubber cannot imbibe water. Name the solvent which can be imbibed by it.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Loaction