1.

Carbohydrates.

Answer»

Solution :Carbohydrates are essential for life in both plants and ANIMALS.
(2) They are the important constituent of supporting TISSUES in plants e.g. cellulose found in wood, cotton etc.
(3) They form a major part of our food and store chemical energy in plants.
(4) They act as the major SOURCE of energy for animals and human BEINGS.
(5) Animals store glucose in the form of glycogen which is main source of energy.
(6) Carbohydrates satisfy the three basic needs, food, clothes and shelter.


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