Advertisements
Advertisements
प्रश्न
Study the diagram given alongside and answer the questions that follow:
(i) Explain the physiological process of being study.
(ii) What will be the observations in the two test-tubes after about 2-3 days?
(iii) Give a reason for your answer in (ii) above.
(iv) Why is the surface of water covered with oil?
(v) State the purpose of setting up test tube B.
Advertisements
उत्तर
(i) Transpiration: Loss of water as water vapour from aerial parts of the plant.
(ii) After 2-3 days the level of waterfalls in test-tube A while it remains constant in test tube B.
(iii) The fall in the level of water in test-tube A due to the absorption of water by the roots.
(iv) The oil has been put in each test-tube to prevent the loss of water by evaporation.
(v) The purpose of setting up test-tube B is to show that in the absence of a plant, there is no change in the level of water.
APPEARS IN
संबंधित प्रश्न
Describe an experiment to show that the plant loses water through its leaves.
Answer the following (only in few words);
In which form, water comes out in transpiration?
Choose the correct answer:
The cause of wilting is more ___________
Give Reasons for the following:
Plants absorb more water than their requirement
Give Reasons for the following:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
Give Technical Term
Loss of water from the aerial parts of a plant.
Complete the following sentence with appropriate word:
Transpiration normally takes place in the presence of ___________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The pH of the guard cells increases during day time
Give a reason/suitable explanation.
Forests tend to bring more rains.
