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प्रश्न
Distinguish between the following:
Stomata and lenticels
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उत्तर
| Stomata | Lenticels | ||
| 1. | There are two guard cells in the shape of beans surrounding these small openings. They can be opened and closed. | 1. | There are no guard cells surrounding these special openings. They remain open all the time |
| 2. | They are mostly found on the abaxial surface of leaves. | 2. | These are found on the surface of older woody stems. |
| 3. | These are responsible for the diffusion of gases during photosynthesis and respiration. They also help in transpiration. | 3. | These are mainly responsible for diffusion of gases during respiration. They also help in transpiration. |
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संबंधित प्रश्न
Name the following:
openings on the stem through which transpiration occurs.
Given ahead is the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the question that follow:
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.
Given below is the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the questions that follow:
(i) What is the colour of dry cobalt chloride paper?
(ii) Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
(iii) Why axe glass slides placed over the dry cobalt chloride papers?
(iv) 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.
(v) Define the term ‘transpiration’.
Give Technical Term
Opening found on the undersurface of the dorsiventral leaf.
Name the following:
A potometer is an instrument for measuring the rate of the most transpiration in a herbaceous plant like Balsam occurs through which part.
Name the following:
A plant having sunken stomata.
How will you differentiate the different types of transpiration?
The paper used to demonstrate unequal transpiration in a dicot leaf is ______.
Name the following:
The openings on the barks of trees through which transpiration occurs.
