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प्रश्न
Give Reasons for the following:
Balsam plants wilt during midday even if the soil is well watered.
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उत्तर
The transpiration rate in such plants is very high during mid-day and exceeds the water absorption rate of the roots. So more water is lost than absorbed. This water deficiency in cells causes them to lose turgidity and the plants wilt.
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संबंधित प्रश्न
The diagram alongside represents a structure found in a leaf. Study the same and answer the questions that follow:
(i) Name the parts labeled A and B.
(ii) What is the biological term for the above structure?
(iii) What is the function of the part labeled A?
(iv) Mention two structural features of A, which help in the function mentioned in (iii) above?
(v) Where is this structure likely to be found in a leaf?
(vi) The structure (fig.5.22) helps in the process of transpiration. Explain the term transpiration.
(vii) How many other cells are found surrounding this structure as seen in the diagram?
Choose the correct answer:
In herbaceous plants, following percentage of absorbed water comes out __________
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
Explain the Term
Lenticular
Explain the Term :
Hydathode
Explain the Term
Lenticel
Differentiate Between Transpiration and Perspiration.
Complete the following sentence with appropriate word:
The leaves of the __________ plants have cuticular wax.
