Biology
How does temperature, light intensity and wind affect transpiration?
Transport in Plants
23 Likes
Answer
- Temperature — Higher temperatures increase the rate of transpiration due to faster evaporation of water.
- Light intensity — With Sunlight the rate of transpiration is faster as stomata are open to allow inward diffusion of carbon dioxide for photosynthesis. During night time, the stomata remain closed and hence transpiration hardly occurs.
- Wind — Transpiration is more when the wind is blowing faster as water vapour moves away faster from the surface of leaves.
Answered By
15 Likes
Related Questions
Given alongside is an experimental set up. Study the figure and answer the following questions:
(a) What is the main objective of the experiment?
(b) Name the tissue which is responsible for the process shown in the figure.
(c) Name two dyes which can be used in the above experiment to make a coloured solution.
The set up shown alongside was kept in sunlight for an hour. It was observed that drops of water appeared on the inside surface of the polythene bag.
(a) Name the process which is being demonstrated.
(b) Why was the pot with its soil left uncovered by the polythene bag?
(c) Why was the pot left in sunlight?
(d) Suppose that the pot in this experiment was placed inside a dark room instead of placing it in sunlight for some time. What difference would be noticed?
Draw a magnified view of the root hair and label all its parts neatly. From the parts labelled by you, name the parts matching the description given below:
(a) Outermost layer of the root
(b) Unicellular outgrowth
(c) Part that is freely permeable
(d) Part that is semi-permeable
Briefly explain, how transpiration helps in the upward conduction of water in plants?