Selina ICSE Class 9 Biology Solutions Chapter 10 Nutrition

Selina ICSE Solutions

Q1) Multiple choice question:-

1) Which one of the following pairs of nutrients includes both as simple sugars (monosaccharides)?
a) Sucrose and glucose
b) Glucose and maltose
c) Fructose and glucose
d) Maltose and lactose
Solution: (c) Fructose and glucose

2) Which one of the following is the correct matching of a nutrient mineral element and its one rich source?
a) Calcium – Potato
b) Sodium – Citrus fruits
c) Iodine – Dairy milk
d) Potassium – Banana
Solution: (d) Potassium – Banana

3) Marasmus is due to deficiency of:
(a) Vitamin C
(b) Carbohydrates
(c) Fat
(d) Food
Solution: (b) Carbohydrates

4) Fat-soluble vitamins are
a) A, D and E
b) B, C and D
c) B, D and E
d) A, B and C
Solution: (a) A, D and E

5) Which of the following is the best source of Vitamin A?
a) Apple
b) Honey
c) Carrot
d) Peanuts
Solution: (c) Carrot

6) Ascorbic acid is Vitamin:
a) C
b) D
c) B
d) A
Solution: a) C

Q) Mention whether the following statement is true (T) or False (F).

1) Cellulose in our food passes out undigested.
a) True
b) False
Solution: T (True)

2) Kwashiorkor is a severe vitamin deficiency disease.
a) True
b) False
Solution: F (False)
Reason:- Kwashiorkor is a serious case of protein shortage.

3) Iron is required for the proper working of the thyroid.
a) True
b) False
Solution: F (False)
Reason:- Iodine is necessary for the thyroid to function properly.

4) Foods protect us from disease and therefore antibiotics that protect us from the disease are also foods.
a) True
b) False
Solution: F (False)
Reason:- When the immune system of the body recognizes anything, it produces antibodies, which are proteins.

5) Mineral salts contribute in regulating body processes.
a) True
b) False
Solution: T (True)

Q) Very Short Answer

Question 1) Name the mineral element that is needed for the following respectively:
a) Strong teeth
b) Proper working of thyroid
c) Synthesis of hemoglobin

a) Strong teeth:- Fluorine
b) Proper working of thyroid:- Iodine
c) Synthesis of hemoglobin:- Iron

Question 2) Name the nutrients whose deficiencies cause the following diseases in humans:
a) Pernicious anaemia
b) Pellagra
c) Night-blindness
d) Goitre
e) Kwashiorkor

a) Pernicious anaemia – Vitamin B12
b) Pellagra – Vitamin B3
c) Night blindness – Vitamin A
d) Goitre – Mineral iodine
e) Kwashiorkor – Proteins

3) Mark the odd one out in the following cases and name the category to which the others belong:
a) Xerophthalmia, Marasmus, Pellagra, Scurvy
b) Riboflavin, Thiamine, Folic acid, Iodine
a) Here odd term is Marasmus and the category is Vitamin deficiency diseases
b) Here odd term is Iodine the category is Vitamins.

Q) Short Answer Type

Question 1) Give two examples of the following and their usefulness, if any, in our body.

Question 2) Define and give one example of a balanced diet.

A balanced diet is one that includes all of the major dietary components in the right amounts. At least half of the energy in a healthy diet must come from carbs, while the remaining third comes from fat and the final 15% comes from protein. Age, sex, and exercise will affect the precise ideal doses of each vitamin.

Question 3) A doctor advises a bone patient to include more of milk and milk products in his everyday food. Why so?

Typically, calcium and iron make up bones. Calcium and Vitamin A are abundant in milk and milk-derived products. In order to strengthen his bones and teeth, a doctor would counsel a bone patient to consume more milk and milk products in general. Vitamin A is shielded from oxidation by milk. Even the calcium in milk facilitates blood coagulation. As a result, milk is a healthy food.

Q) Long Answer Type

Question 1) List the six main purposes for which food is required by the body.

The body’s need for food
(1) Development: In order to create new protoplasm or cells, food is required. This promotes an organism’s growth.
(2) Repair: Food supplies the components needed to replace tattered or damaged cells and tissues.
(3) Energy: Food provides us with energy. Several aspects of existence require this energy to be carried out.
(4) Maintenance: Food-derived nutrients aid in maintaining the chemical make-up of cells.
(5) Provision of raw materials: Food provides the raw ingredients needed to synthesize products like enzymes, hormones, perspiration, milk, etc.
(6) Protection: Food offers defense against illness and infection.

Question  2) Why are proteins necessary in our food? Name one protein deficiency disease of young children.

Proteins are the nutrients that help develop muscle. They supply the chemical building blocks needed for body cells and tissues to develop and heal. In times of need, the body may also oxidize proteins to provide energy. Young children’s protein deficient disease: Kwashiorkor.

Question 3) Taking the examples of whole grain atta, fruit and green leafy vegetables, describe how roughage in our diet is useful.

The main sources of roughage include fruits, whole-grain atta, and green leafy vegetables.
(1) Our bodies receive no nutrients from roughage. It is still nutritious and necessary for the intestines to operate properly.
(2) It retains a lot of the water that it absorbs. This keeps feces soft and helps avoid constipation.
(3) It becomes bulky when it interacts with intestinal waste.
(4) It promotes the development of stools and aids in the removal of waste food from our bodies.
(5) Roughage facilitates the slow, smooth passage of food through the gastrointestinal system by enlarging the intestinal lumen. This action is necessary for the efficient and thorough digestion of food as well as the expulsion of intestinal waste.


Question 1) Given alongside is an incomplete table of vitamins, their rich sources and the related deficiency diseases. Fill in the blanks [(i)-(viii)] with only one suitable word for each.

Selina ICSE Class 9 Biology Solutions Chapter 10 Nutrition


Selina ICSE Class 9 Biology Solutions Chapter 10 Nutrition

Question 2) Complete the following table by filling the

Selina ICSE Class 9 Biology Solutions Chapter 10 Nutrition


Selina ICSE Class 9 Biology Solutions Chapter 10 Nutrition

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