Advertisements
Advertisements
प्रश्न
The cause of wilting is more because of ______.
विकल्प
respiration
photosynthesis
absorption
transpiration
Advertisements
उत्तर
The cause of wilting is more because of transpiration.
Explanation:
Wilting happens when the rate of water loss from the aerial parts of a plant significantly exceeds the rate of water absorption by its root system. This rapid loss of water vapour occurs through transpiration. When transpiration is excessive (especially during hot, dry days), the plant cells lose their turgor pressure and flatten, causing the leaves and non-woody stems to lose their rigidity and droop downward.
APPEARS IN
संबंधित प्रश्न
Transpiration pull will be maximum under which set of the following conditions?
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
Answer the following (only in few words);
Give one important difference between transpiration and evaporation.
Mark the most appropriate answer in the following:
Transpiration pull will be maximum under which of the following conditions?
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?
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
What is the purpose of keeping the test tube B in the experimental setup?
Give Reasons for the following:
Young plants wilt on a hot sunny day.
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
State the Location:
Lenticels
Mark the most appropriate answer in the following:
Transpiration is very low during storms due to:
