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प्रश्न
The figure below represents the vertical section of a leaf:
(i) Name the parts 1 to 5.
(ii) How many veins have been shown?
(iii) State the functions of parts 4 and 5.
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उत्तर
(i)
- Cuticle
- Upper Epidermis
- Palisade tissue/chloroplast
- Xylem
- Stomata
(ii) One vein has been shown.
(iii) Xylem – helps in the conduction of water.
Stomata – through which exchange of gases takes place.
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संबंधित प्रश्न
Briefly explain the following terms: Photophosphorylation
How does carbon dioxide return to the atmosphere? Explain.
A student in order to study the importance of certain factors of photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning the student covered one of the leaves with black paper in the centre only. Student placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
(i) What aspect of photosynthesis was being investigated?
(ii) Is there any control in this experiment? If so, state the name.
(iii) Why was the plant kept in the dark before the experiment?
(iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?
Name the following:
The first form of food substance produced during photosynthesis.
Explain, why respiration is said to be a reversed process of photosynthesis?
Complete the following sentence with appropriate word:
A plant that does not perform photosynthesis is _______.
Gas exchange takes place in plants using _____.
Where does the carbon that is used in photosynthesis come from?
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Producers and Consumers (organisms)
