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प्रश्न
Which of the following events does not occur in photosynthesis?
(a) conversion of light energy into chemical energy
(b) reduction of carbon dioxide to carbohydrates
(c) oxidation of carbon to carbon dioxide
(d) absorption of light energy by chlorophyll
उत्तर
(c) oxidation of carbon to carbon dioxide
Photosynthesis involves the conversion of light energy into chemical energy by chlorophyll. In this process, carbon dioxide is reduced to carbohydrates.
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संबंधित प्रश्न
What are the differences between autotrophic nutrition and heterotrophic nutrition?
(a) Name the pigment in leaves which absorbs sunlight energy.
(b) What is the colour of this pigment?
Name the pigment which can absorb solar energy.
Name the food which gets stored in plant leaves.
Explain the mechanism of photosynthesis.
When carrying out the starch test on a leaf, why is it important to boil the leaf in alcohol?
(a) to dissolve the waxy cuticle
(b) to make the cells more permeable to iodine solution
(c) to remove the chlorophyll
(d) to stop chemical reactions in the cells.
The oxygen liberated during photosynthesis by green plants comes from:
(a) glucose
(b) water
(c) carbon dioxide
(d) chlorophyll
Opening and closing of stomatal pore depends on ______.
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
Two green plants are kept separately in oxygen free containers, one in the dark and other in sunlight. It was observed that plant kept in dark could not survive longer. Give reason for this observation.
