Question

Write an essay on plants

Answer 1

Answer:

Plants are the silent workers of our planet, they want to live and also help others (animals including human beings) to live. They have well-developed metabolic system, which includes both anabolism (synthesis) and catabolism (break­down). On the other hand, animals have only catabolic system.

Anabolic system, like photo­synthesis, is present in most of the plants and catabolic system, like respiration, is present in all plants. Photosynthesis is dependent on light, but the respiration occurs both day and night (throughout their life period). Photosynthesis requires CO2, water, chlorophyll and light. Plants can absorb CO2 from the atmosphere and also utilize the CO2 produced from its own respira­tion.

Water is being absorbed by plants from the soil. Chlorophyll absorbs light mainly from the sun (like an antenna of a T.V.). The resultant product is the carbohydrate (mainly glucose) and O2 is released in the atmosphere as by-product. This O2 is utilised by both plants and animals. The above fact indicates that the rate of O2 production in plant is much more than that of respi­ration.

Thus, the produced O2 becomes available to animals in sufficient amount. The product of photosynthesis – the carbohydrates is being utilised by the plants during respiration and the excess food is being stored in different organs. We snatch the food and other products from their storehouse. On the other hand, during respiration the O2 is being used up and CO2 released.

Answer 2

Explanation:

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