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प्रश्न
Explain the mechanism of photosynthesis.
उत्तर
In green plants, stomatal pores of the leaves absorb carbon dioxide from the air. Chlorophyll present in the plant cells absorbs sunlight and root hair absorbs water from the soil. All these reach chlorophyll, which utilises the Sun’s energy to combine water and carbon dioxide to form glucose and oxygen. In this way, green plants convert solar energy into chemical energy by forming carbohydrates.
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संबंधित प्रश्न
List the steps of preparation of temporary mount of a leaf peel to observe stomata.
The leaves of a plant first prepare food A by photosynthesis. Food A then gets converted into food B. What are A and B?
Apart from carbon dioxide and water, name four other raw materials which are needed by the plants.
Name the raw materials required for photosynthesis. How do plants obtain these raw materials?
The oxygen liberated during photosynthesis by green plants comes from:
(a) glucose
(b) water
(c) carbon dioxide
(d) chlorophyll
Most of the plants absorb nitrogen in one of the following forms. This is:
(a) proteins
(b) nitrates and nitrites
(c) urea
(d) atmospheric nitrogen
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
Which of the following equations is the summary of photosynthesis?
Which of the following statements about the autotrophs is incorrect?
What are the by-products of autotrophic nutrition?
