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प्रश्न
Give suitable explanation for the following:
On a bright sunny day, the leaves of certain plants roll up.
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उत्तर
On a bright sunny day, the rate of transpiration is much higher than any other days. The leaves of certain plants roll up on a bright sunny day to reduce the exposed surface and thus reduce the rate of transpiration.
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संबंधित प्रश्न
Under what conditions do plant transpire most slowly?
Given below is a diagrammatic sketch (surface view) of a stomatal apparatus from a dicot leaf.
(a) Label the parts numbers 1-3
(b) Is this state, open or closed?
(c) Is this stoma, of a dicot leaf or a monocot leaf?
(d) Redraw a sketch of the stomatal apparatus in the state opposite to the one shown here.
Comment on the following statement:
A well-watered potted plant shows wilting of leaves on a hot sunny day.
An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
Suggest a suitable control for this experiment.
Design an experiment to demonstrate the transpiration process.
Describe an experiment to prove that transpiration occurs more from the undersurface of dorsiventral leaves.
Transpiration takes place through ______.
Why is transpiration called a necessary evil?
The lower surface of leaf will have more number of stomata in a ______.
A root hair is derived from ______ cell.
