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प्रश्न
Give suitable explanation for the following:
Cork and bark of trees help in preventing loss of water
उत्तर
Cork and Bark of trees are tissues of old woody stems. Bark is thick with outermost layer made of dead cells and the cork is hydrophobic in nature. These properties make them water-proof and hence they prevent transpiration.
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संबंधित प्रश्न
Multiple choice question. Tick (✓) the correct choice:
The loss of water through the stomata of leaves is called
(a) transpiration
(b) wilting
(c) evaporation
(d) osmosis
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
Name the phenomenon being demonstrated.
Describe an experiment to prove that transpiration occurs more from the undersurface of dorsiventral leaves.
Stomata of a plant open due to ______.
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.
Write a note on Transpiration.
Which one is not related to transpiration?
Excessive transpiration is due to ______.
Describe briefly the three physical properties of water which helps in ascent of water in xylem.
Define the following term:
Wilting
