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प्रश्न
The lower surface of leaf will have more number of stomata in a ______.
पर्याय
Dorsiventral leaf
Isobilateral leaf
Both dorsiventral leafand isobilateral leaf
None of the above
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उत्तर
The lower surface of leaf will have more number of stomata in a dorsiventral leaf.
Explanation:
Dorsiventral leaves face a high rate of transpiration and the transpiration occurs through stomata, so to avoid the percentage of transpiration rate lower surface of the dorsiventral leaves contains more number of stomata and a lesser number of stomata in the upper surface but In the isobilateral leaf, the number of stomata is the same on both surfaces.
APPEARS IN
संबंधित प्रश्न
Discuss the factors responsible for ascent of xylem sap in plants
The loss of water in the form of water vapour through stomata on leaves is known as ___________.
Which of the following helps in the upward movement of water and dissolved minerals from the roots to the leaves through the stem?
How does transpiration help the roots absorb water and minerals from the soil?
Why is there a need for a transport system in plants and animals?
Give suitable explanation for the following:
Perspiration and transpiration help to cool the body temperature of the organism.
Give a reason.
What happens to the movement of the air-bubble if the apparatus shown above is kept in dark.
Comment on the following statement:
A well-watered potted plant shows wilting of leaves on a hot sunny day.
Litmus paper is used to demonstrate transpiration from the leaves of the green plant.
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.
Name the cell that surrounds the stoma.
What type of transpiration is possible in the xerophyte Opuntia?
Boojho’s uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys.
When does it become necessary to take such a treatment?
Boojho wanted to test the presence of starch in leaves. He performed the following steps.
- He took a leaf and boiled it in water.
- He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.
Analogy:
Photosynthesis: ______:: Transpiration: Stomata
Describe briefly the three physical properties of water which helps in ascent of water in xylem.
Transpiration occurs:
Define the following term:
Wilting
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in the correct form by changing either the first or the last word only.
Transpiration helps to cool the body of the plant.
