Biology
Transpiration is defined as:
- the rise of water up to the stem of a plant.
- the elimination of water with dissolved water products.
- the loss of water as water vapour from the aerial parts of a plant.
- the loss of water as water vapour from the roots as well as the leaves of the plant.
Transport in Plants
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Answer
the loss of water as water vapour from the aerial parts of a plant.
Reason — Transpiration is the loss of water in the form of water vapour from the aerial parts of a plant.
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Raisins swell when put in:
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- Mustard oil
- Saturated sugar solution
The root hairs are suited for absorbing water from the soil because:
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- A cool, humid, windy day,
- A hot, humid, windy day,
- A hot, humid, still day,
- A hot, dry, windy day.
Vinay has kept a small herbaceous plant in a test tube containing water. The surface of the water is covered by a layer of oil. After three hours, he observed that the level of water in the test tube has decreased. This is due to:
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- Wilting
- Both (1) and (2)