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प्रश्न
Comment on the following statement:
A well-watered potted plant shows wilting of leaves on a hot sunny day.
उत्तर
A well-watered potted plant shows wilting of leaves on a hot sunny day. As during hot sunny day rate of transpiration is more than the rate of absorption of water.
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संबंधित प्रश्न
What causes the opening and closing of guard cells of stomata during transpiration?
Which of the following helps in the upward movement of water and dissolved minerals from the roots to the leaves through the stem?
Fill in the blank with the suitable term given below:
Transpiration is more when the wind is blowing _____.
How does transpiration help the roots absorb water and minerals from the soil?
Multiple choice question. Tick (✓) the correct choice:
The loss of water through the stomata of leaves is called
(a) transpiration
(b) wilting
(c) evaporation
(d) osmosis
A well watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf x and y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as a, b, c, d and e. Rewrite the correct answer by filling in the appropriate letter for the questions that follow:
1. After the starch test, leaf x would look like ______.
2. After the starch test, leaf y would look like ______.
(iv) The experiment with leaf y shows that photosynthesis requires the presence of certain factors. Mention any one factor.
Choose the correct answer:
More water loss in plants is the cause of wilting. This can be checked by ____________
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
What is the purpose of putting oil in the test tube?
Design an experiment to demonstrate the transpiration process.
Which of the following is an external factor affecting the rate of transpiration?
