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प्रश्न
Give suitable explanation for the following:
On a bright sunny day, the leaves of certain plants roll up.
उत्तर
On a bright sunny day, the rate of transpiration is much higher than any other days. The leaves of certain plants roll up on a bright sunny day to reduce the exposed surface and thus reduce the rate of transpiration.
संबंधित प्रश्न
The figure below represents the set-up at the start of certain experiment to demonstrate an activity of plants:
(i) What is the aim of the experiment?
(ii) Why has oil been put in each test tube?
(iii) What will be the observations in the two test-tubes after about 2-3 days?
(iv) Give reasons to explain any change observed as answered in (iii) above.
(v) Why has the test-tube b without the plant, been taken in the experiment?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Calcium chloride paper is used to demonstrate transpiration
Answer the following question.
Define and or explain the term:
Guttation
Define transpiration.
What type of transpiration is possible in the xerophyte Opuntia?
Excessive transpiration is due to ______.
Observe the diagram and answer the following;
 (i) |
 (ii) |
- Are these types of guard cells found in monocots or dicots?
- Which of these shows a higher water content (i) or (ii)?
- Which element plays an important role in the opening and closing of stomata?
Observe the following diagram and identify the process and its significance from the following options:
Name the structures through which Transpiration occur in a plant.
Which of the following is an external factor affecting the rate of transpiration?
