Question

III- JUSTIFY
1. Photosynthesis is a unique process on Earth.​

Answer 1

Explanation:

The process of photosynthesis is unique in following ways:-

1. Photosynthesis converts inorganic raw materials into food, that provides our ecosystem with energy.

2. Green plants provide organic food to all the animals and humans.

3. Rare fossil fuels like coal, petroleum and natural gas are formed through the degradation of the past plant and animal parts, which were originally formed by photosynthesis.

4. Plant products like timber, rubber, herbs, medicines resin and oils are derived from photosynthesis.

5. Photosynthesis helps in providing oxygen in the atmosphere required by all living organisms.

6. Photosynthesis decreases the concentration of carbon dioxide and other harmful industrial wastes that lead to respiration problems in living beings.

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Answer 2

Photosynthesis is the process by which green plants produce carbohydrates using carbon dioxide, and water in the presence of sunlight. This process can be termed as the most important life process in the ecosystem as it enables the conversion of light energy of the sun to chemical energy in the form of carbohydrates. This energy further moves up in the food chain via the heterotrophs to the primary, secondary and tertiary consumers. Hence, the energy that eventually moves up the food chain and then returns to the plants via the process of decomposition is first produced in the process of photosynthesis.

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