Nutrition And Health Book Back Questions 9th Science Lesson 21
9th Science Lesson 21
21] Nutrition And Health
Book Back Questions with Answer and Do You Know Box Content
Do You Know?
Human skin can synthesize Vitamin D when exposed to sunlight (especially early morning). When the sun rays falls on the skin dehydrocholesterol is converted into Vitamin D. Hence, Vitamin D is called as Sunshine vitamin. Vitamin D improves bone strength by helping body to absorb calcium.
Dr. Funk introduced the term vitamin. Vitamin A was given the first letter of the alphabet, as it was the first vitamin discovered.
Bananas are best stored at room temperature. When it is kept in a refrigerator, the enzyme responsible for ripening becomes inactive. In addition, the enzyme responsible for browning and cell damage becomes more active thereby causing the skin colour change from yellow to dark brown.
October 16th is World Food Day. It emphasizes on food safety and avoiding food wastage.
A slogan from farm to plate, make food safe was raised on World Health Day (7th April 2018) to promote and improve food safety.
Choose the best answers:
1. The nutrient required in trace amounts to accomplish various body functions is ______________
(a) Carbohydrate
(b) Protein
(c) Vitamin
(d) Fat
2. The physician who discovered that scurvy can be curved by ingestion of citrus fruits is _____________
(a) James Lind
(b) Louis Pasteur
(c) Charles Darwin
(d) Isaac Newton
3. The sprouting of onion and potatoes can be delayed by the process of _________________
(a) Freezing
(b) Irradiation
(c) Salting
(d) Canning
4. Food and Adulteration Act was enforced by Government of India in the year _____________
(a) 1964
(b) 1954
(c) 1950
(d) 1963
5. An internal factor responsible for spoilage of food is _______________
(a) Wax coating
(b) Contaminated utensils
(c) Moisture content in food
(d) Synthetic preservatives
Fill in the blanks:
1. Deficiency diseases can be prevented by taking ________________ diet.
2. The process of affecting the natural composition and the quality of food substance is known as ________________.
3. Vitamin D is called as _________________ vitamin as it can be synthesised by the body from the rays of sunlight.
4. Dehydration is based on the principle of removal of ________________.
5. Food should not be purchased beyond the date of ______________.
6. AGMARK is used to certify _______________ and _______________ products in India.
State true or false. If false, correct the statement:
1. Iron is required for the proper functioning of thyroid gland.
2. Vitamins are required in large quantities for normal functioning of the body.
3. Vitamin C is a water soluble vitamin.
4. Lack of adequate fats in diet may result in low body weight.
5. ISI mark is mandatory to certify agricultural products.
Match the following:
Column A Column B
1. Calcium – Muscular fatigue
2. Sodium – Anaemia
3. Potassium – Osteoporosis
4. Iron – Goitre
5. Iodine – Muscular cramps
Give abbreviations for the following:
i) ISI ii) FPO iii) AGMARK iv) FCI v) FSSAI
Consider the statements given below and choose the correct option:
Direction: In the following question, a statement of a Assertion is given and a corresponding Reason is given just below it. Of the statements given below, mark the correct answer as:
(a) If both assertion and reason are true and the reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion
(c) If assertion is true but reason is false
(d) If both assertion and reason is false.
1. Assertion: Haemoglobin contains iron.
Reason: Iron deficiency leads to anaemia
2 Assertion: AGMARK is a quality control agency.
Reason: ISI is a symbol of quality.
Give reasons for the following statements.
a. Salt is added as a preservative in pickles ________
b. We should not eat food items beyond the expiry date _________
c. Deficiency of calcium in diet leads to poor skeletal growth ___________
Answers:
Choose the best answers:
1. vitamin 2. James Lind 3. Irradiation 4. 1954 5. Moisture content in food
Fill in the blanks:
1. Balanced 2. Food Spoilage 3. Calciferol 4. Water 5. Expiry 6. Livestock, Agricultural products
State true or false. If false, correct the statement:
1.False
Correct answer: Iodine is required for the proper functioning of thyroid gland
2.False
Correct answer: Vitamins are required in smaller quantities for normal functioning of the body
3.True
4.True
5.False
Correct answer: AGMARK is mandatory to certify agricultural products
Match the following:
1.Calcium- Osteoporosis
2.Sodium- Muscular cramps
3.Potassium- Muscular fatigue
4.Iron- Anaemia
5.Iodine- Goitre
Give abbreviations for the following:
i. Indian Standards Institution ii. Fruit Process Order iii. Agricultural Marking
iv. Food Corporation of India v. Food Safety and Standards Authority of India
Consider the statements given below and choose the correct option:
1. If both Assertion and Reason are true and the Reason is the correct explanation of Assertion
2. If both Assertion and Reason is false
Give reasons for the following statements.
a. Salt helps in removal of moisture from food by process of Osmosis
b. Eating a food beyond expiry date is harmful to the body
c. Calcium is important component of body. It is a macronutrient. Its is largely required for bone formation. Its
deficiency results in poor skeletal growth