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प्रश्न
The paper used to demonstrate unequal transpiration in a dicot leaf is ______.
पर्याय
Filterpaper
Litmus paper
Starch paper
Cobalt chloride paper
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उत्तर
The paper used to demonstrate unequal transpiration in a dicot leaf is Cobalt chloride paper.
Explanation:
One can use dry Cobalt chloride paper to illustrate transpiration. When this is placed on a transpiring leaf, it changes colour from blue to pink.
APPEARS IN
संबंधित प्रश्न
Choose the correct answer:
Stomata open during day time because guard cells
Choose the correct answer:
Stomata can open in night also in _______________
Given ahead is a diagram of an experimental setup to study the process of transpiration in plants. Study the same and then answer the question that follows:
- Name the colour of dry cobalt chloride paper.
- Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
- Why are glass slides placed over the dry cobalt chloride papers?
- After about half an hour, what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.
The apparatus shown here is Girreau’s poto-meter designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride (CaCl2) contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After a few hours, CaCl2 vials were taken out and weighed again.
(i) What is the purpose of keeping CaCl2 vials inside the cup?
(ii) After a few hours, the CaCl2 vials were taken out and weighed again. Will you expect any difference in weight? If so, give reasons.
(iii) What was the purpose of using a mano-meter?
(iv) What do you mean by transpiration?
Give Technical Term
Which side of the leaf has more stomata?
How will you differentiate the different types of transpiration?
Guard cells help in regulating the ______.
Assertion (A): The loss of excess water from the aerial parts of the plant in the form of water vapor is known as transpiration.
Reason (R): Stomata of the leaf perform transpiration.
Write a short note on lenticular transpiration.
Maximum transpiration occurs through ______.
