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प्रश्न
What will happen to the rate of photosynthesis on a plant under the following circumstances?
(i) cloudy day in morning but bright sunshine in the afternoon
(ii) no rainfall in the area for a considerable time.
(iii) gathering of dust on the leaves
उत्तर
The rate of photosynthesis will:
(i) first decrease as there will be less sunlight and then increase during the afternoon
(ii) decrease due to less availability of water
(iii) decrease due to the closed stomatal pores
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संबंधित प्रश्न
What are the differences between autotrophic nutrition and heterotrophic nutrition?
Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?
What is the name of those cells in the leaf of a plant which control the opening and closing of stomata?
what is chlorophyll? What part does chlorophyll play in photosynthesis?
The cell organelle where photosynthesis occurs.
The cells which surround a stomatal pore.
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reason for your answer.
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following steps can be followed for making the apparatus air tight?
- placing the plants on glass plate
- using a suction pump.
- applying aseline to seal the bottom of jar.
- creating vacuum
Observe the experimental setup shown below. Name the chemical indicated as ‘X’ that can absorb the gas which is evolved as a byproduct of respiration.
