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प्रश्न
Why is plant food not produced in any other parts of the plant except the green ones?
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उत्तर
Plant food is produced by a special process known as photosynthesis. The process of photosynthesis requires specialised structures called chloroplasts and these structures are found only in green regions of plants. The green colour of specific parts of plants is due to the presence of chlorophyll pigment present in these chloroplasts. Structures in plants which do not contain chloroplast, do not appear green in colour and are not capable of producing food.
संबंधित प्रश्न
what is chlorophyll? What part does chlorophyll play in photosynthesis?
what are the by-products of photosynthesis ?
Why do plants need nitrogen? How do plants obtain nitrogen?
How do guard cells regulate opening and closing of stomatel pores?
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
Name the raw materials required for photosynthesis. How do plants obtain these raw materials?
The internal energy (cellular energy) reserve in autotrophs is:
(a) proteins
(b) fatty acids
(c) glycogen
(d) starch
Do all cells use oxygen to produce energy?
Gas A, obtained above is a reactant for a very important biochemical process which occurs in the presence of sunlight. Identify the name of the process -
In the given diagram of a closed stomata: (1), (2), (3) and (4) respectively are:
