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प्रश्न
What is meant by photosynthesis? Why is it so important in nature?
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उत्तर
Photosynthesis: It is an anabolic process by which plants manufacture
carbohydrates or food material with the help of water and carbon dioxide in the
presence of sunlight and chlorophyll.
It is an important process as:
a. It produces food directly or indirectly for all living organisms on earth.
b. It maintains balance between oxygen and carbon dioxide in the atmosphere.
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संबंधित प्रश्न
The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:
(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.
Identify the odd one in each set : Transpiration, Photosynthesis, Phagocytosis, Guttation
Define the following:
Organic food
Fill in the blanks:
The end products of photosynthesis are ______ and ______.
Name the following:
The category of organisms that prepare their own food from basic raw materials.
Complete the following food chain by writing the names of appropriate organisms in the blank:
Grass → __________ → Lion
Complete the following sentence with appropriate word:
A plant that does not perform photosynthesis is _______.
The end product of photosynthesis is ______.
Label the diagram with the raw materials and products of photosynthesis.
Guard cells of stomata are green but cannot photosynthesize? Give reason.
