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प्रश्न
What are stomata? What governs the opening and closing of stomata?
उत्तर
Stomata are the tiny pores present on the surface of leaves which helps in gaseous exchange and transpiration. When water moves inside the guard cells, they swell and become turgid which facilitates the opening of the stomata. Similarly, when water moves out of the cell, the cell becomes flaccid which promotes the closing of the stomata. This occurs due to the difference in solute concentration.
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संबंधित प्रश्न
Define the term Transpiration stream
Name the process by which water loss takes place through the leaves.
The diagram given alongside is an apparatus used to study a particular phenomenon in plants.
(i) Name the apparatus.
(ii) What is it used for?
(iii) What is the role played by the air bubble in this experiment?
(iv) Of what use is the reservoir?
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:
Explain the process named above in 7.1.
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.
Stamen has two parts called ______ and ______.
Excessive transpiration is due to ______.
Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?
Name the structures through which Transpiration occur in a plant.
Define the following term:
Wilting
