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प्रश्न
Fig. represents the vertical section of a leaf.
- Name the parts labelled 1 to 5.
- What do the two arrows (dotted and solid) indicate in the daytime and at night?
- Could you add one more arrow in the figure? If yes, what for?
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उत्तर
-
- Upper Epidermis
- Palisade layer/chloroplast
- Xylem
- Phloem
- Guard cell
- The two arrows show the release of oxygen and water vapours during the daytime and carbon dioxide and very less amount of oxygen is released during the night.
- Yes, one more arrow can be added to show the absorption of carbon dioxide by the leaf.
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संबंधित प्रश्न
Fig. demonstrates a physiological process taking place in green plants. The whole set-up was placed in bright sunlight for several hours. Study the diagram and answer the questions that follow:
- What aspect of the physiological process is being examined?
- Explain the physiological process mentioned in (a) above.
- Label the parts numbered 1 and 2 in the diagram.
- Write a well-balanced chemical equation for the physiological process explained in (b) above.
- What would happen to the rate of bubbling of the gas if a pinch of sodium bicarbonate is added to the water in the beaker? Explain your answer.
Name the following:
The process of conversion of ADP into ATP during photosynthesis.
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
Are the following statement true or false? Give reason in support of your answer.
The starting point of carbon cycle is the release of carbon dioxide by animals during respiration.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Is there any control in this experiment? If so, state it.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Why was the plant kept in the dark before the experiment?
Complete the following food chain by writing the names of appropriate organisms in the blank:
Grass → __________ → Lion
Explain the term Phosphorylation.
Choose the correct option.
The sequential order in electron transport from PSII to PSI of photosynthesis is ______.
Only green plants have the unique capacity to release ______ into the atmosphere.
