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प्रश्न
What causes the opening and closing of guard cells of stomata during transpiration?
उत्तर
During transpiration, the movement of (Potassium) ions, in and out of the guard cells, causes the opening and closing of the stomate. When the water moves inside the guard cells, causing them to swell up and become turgid, making the stomata open. When guard cells cause water to move out of the cell, make guard cells shrunk, and the stomata pore closes.
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संबंधित प्रश्न
The loss of water in the form of water vapour through stomata on leaves is known as ___________.
Under what conditions do plant transpire most slowly?
Briefly explain, how transpiration helps in upward conduction of water in plants?
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.
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
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:
Why was the pot covered with a plastic sheet?
What type of transpiration is possible in the xerophyte Opuntia?
During transpiration, there is a loss of ______
ABA (Abscisic acid) is called a stress hormone. From where does this hormone get released in leaves?
Briefly describe the following:
Angina Pectoris
