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प्रश्न
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation in plants occurs maximum at midday.
विकल्प
True
False
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उत्तर
This statement is false.
Explanation:
Guttation occurs due to excessive root pressure. It is at its maximum when root pressure is at its maximum, which occurs in the early mornings or at night. This is because during these times, transpiration is very low and water absorption is very high.
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संबंधित प्रश्न
Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water?
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
The diagram given below represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.
Explain why:
Raisins swell up in water.
Choose the correct answer:
Which tissue makes passage for ascent of sap?
Study the experimental setup in the figure and then answer the question that follow.
What will you observe in the setup after about half an hour? Give reasons for your answer.
How is root hair structurally adapted for absorption of water from the soil?
Give Technical Term for the following.
The tissue responsible for the ascent of sap in plants.
