Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Potometer: It is an apparatus where the rate of the air bubble will indicate the rate of transpiration.It is used to measure the rate of transpiration.
APPEARS IN
संबंधित प्रश्न
Name the following:
An instrument used to find the rate of transpiration.
Name the following:
The apparatus to record the rate of transpiration in a cut shoot.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Forest contribute in bringing rains.
What is a photometer?
What is lenticular transpiration? Mention one major difference between lenticular transpiration and stomatal transpiration.
Given below is the diagram of an apparatus used to study a particular phenomenon in plants:
- Name the apparatus.
- What is it used for?
- What is the role played by the air-bubble in this experiment?
- What is the use of the reservoir?
- What happens to the movement of the air-bubble if the apparatus is kept:
- in the dark
- in sunlight
- in front of a fan?
Give a reason in each case.
Given below is the diagram of an apparatus used to study a particular phenomenon in plants:
What is it used for?
The apparatus shown in the following diagram is Garreau’s potometer 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 few hours, CaCl2 vials were taken out and weighed again.
What is the purpose of keeping CaCl2 vials inside the cup?
Write any two limitations of using a Ganong's potometer to demonstrate the uptake of water.
Match the terms given in column A with column B:
| Column A | Column B | ||
| (a) | Hydathodes | (i) | Photosynthesis |
| (b) | Stomata | (ii) | Respiration |
| (c) | Cuticle | (iii) | Regulates opening and closing of stomata |
| (d) | Lenticels | (iv) | Reduces loss of water |
| (e) | Guard cells | (v) | Guttation |
