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Karnataka Board PUCPUC Science 2nd PUC Class 12

Write two main functions of carbohydrates in plants. - Chemistry

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Question

Write two main functions of carbohydrates in plants.

Short Answer
Very Short Answer

Solution 1

Two main functions of carbohydrates in plants are:

  1. Polysaccharides such as starch serve as storage molecules.
  2. Cellulose, a polysaccharide, is used to build the cell wall.
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Solution 2

Two major functions of carbohydrates in plants are the following:

  1. Structural material for plant cell walls: The polysaccharide cellulose acts as the chief structural material of the plant cell walls.
  2. Reserve food material: The polysaccharide starch is the major reserve food material in the plants. It is stored in seeds and acts as the reserve food material for the tiny plant till it is capable of making its own food by photosynthesis.
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Chapter 14: Biomolecules - Exercises [Page 423]

APPEARS IN

NCERT Chemistry [English] Class 12
Chapter 14 Biomolecules
Exercises | Q 3 | Page 423

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Carbohydrates are optically active polyhydroxy aldehydes and ketones. They are also called saccharides. All those carbohydrates which reduce Fehling's solution and Tollen's reagent are referred to as reducing sugars. Glucose, the most important source of energy for mammals, is obtained by the hydrolysis of starch. Vitamins are accessory food factors required in the diet. Proteins are the polymers of α-amino acids and perform various structural and dynamic functions in the organisms. Deficiency of vitamins leads to many diseases.

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OR

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