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Indigestible fibrous material in the food is known as ..................... such as cellulose in fruits and vegetables and connective tissues in meat and fish.

  • A.Minerals
  • B.Vitamins
  • C.Roughage
  • D.Proteins

Answer: C

Indigestible fibrous material in food is called Roughage.

Roughage, or dietary fibre, is the part of plant food that human digestive enzymes cannot break down, chiefly cellulose. It adds bulk to the food, helps the movement of food through the intestine, prevents constipation and helps control blood cholesterol and sugar.

Minerals and vitamins are micronutrients that are absorbed, and proteins are digested into amino acids, so none of them is indigestible fibrous material.

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