Srijan Class-9 Nutrition ICSE Biology Solutions Ch-9. We Provide Solutions of Concept Check-1, to 4, Very Short Ans, Short Ans, Long Ans, Multiple Choice Type ( including True False), Application / Skill ( Figure Based ) Questions by expert teachers as per ICSE board guidelines. Visit official Website CISCE for detail information about ICSE Board Class-9.
Solutions of Srijan Publication for ICSE Class-9 Biology Ch- 9 Nutrition
| Board | ICSE |
| Publications | Srijan Publication |
| Subject | Biology |
| Class | 9th |
| writer | Veer Bala Rastogi |
| Chapter-9 | Nutrition |
| Topics | Solutions of Concept Check-1, to 2, Very Short Ans, Short Ans, Long Ans, MCQ, Application Skill Based Questions |
| Edition | 2021-2022 |
Concept Check 1 (Page 107)
Name the following:
1. The polysaccharide that is found in plant cell wall.
2. Milk sugar.
3. The common name of glucose.
4. The carbohydrate that forms roughage component of human food.
Answer:
1. Cellulose
2. Lactose
3. Grape Sugar
4. Cellulose
Concept Check 2 (Page 108)
(Ch-9 Nutrition Srijan Publication ICSE Class-9 Biology Solutions )
Fill in the blanks with suitable words:
1. Fats are compounds of ……………. hydrogen and oxygen.
2. One mole of fat releases …………….. of energy
3. Plant fats are ………….. fats.
4. Cholesterol is found in ………………… fats.
5. Layers of fatty tissue form a ……………. around the vital organs.
6. Proteins are compounds of carbon, hydrogen, oxygen and ………………..
7. Protein fibres help in the contraction of ……………
8. Severe deficiency ot protein causes ………………. and ……………. in children.
Answer:
1. Carbon
2. 9.45
3. Unsaturated
4. Animal
5. Stwck absorbing cushion
6. Nitrogen (also Sulphur and phosphorus)
7. Muscles
8. Kwashiorkor and marasmus.
Concept Check 3 (Page 109)
(Ch-9 Nutrition Srijan Publication ICSE Class-9 Biology Solutions )
Answer the following questions briefly.
Q- 1. Give one difference between avitaminosis and hypervitaminosis.
Answer: Any disease which is caused by vitamin deficiency. while Hypervitaminosis is a condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity
Q-2. Which vitamin is described as ant rickets vitamin?
Answer: To prevent rickets, make sure your child eats foods that contain vitamin D naturally — fatty fish such as salmon and tuna, fish oil and egg yolks — or that have been fortified with vitamin D, such as: Infant formula.
Q-3. Which vitamin is synthesized by the bacterial flora of intestine?
Answer: Vitamin B12 synthesis by human small intestinal bacteria
Q- 4. Which vitamins are retained in the body in general?
Answer: – The vitamins A, D, E and K are fat soluble, which means they can be stored in the body. Taking high doses of these vitamins, especially vitamin A, over a long period of time can result in harmful levels in the body unless you have a medically diagnosed deficiency.
Q-5. Name any two water-soluble vitamins.
Answer: – The water-soluble vitamins — C and the B-complex vitamins (such as vitamins B6, B12, niacin, riboflavin, and folate) — dissolve in water. Your body can’t store these vitamins.
Concept Check 4 (Page 113)
(Ch-9 Nutrition Srijan Publication ICSE Class-9 Biology Solutions )
Fill in the blanks.
1. Malnutrition causes stunted ……………….
2. Anaemia is caused due to the deficiency of ………….. minerals.
3. Deficiency of iodine in food leads to the disease called ………………
4. lodine is required for normal functioning of ……………….
5. Deficiency of vitamin D in infants causes ………………
6. Sea food is rich in ……………. and …………………..
Answer:
1. Growth
2. Hemoglobin
3. Goiter
4. Thoride gland
5. Rickets
6. Sodium, Iodine
A. VERY SHORT ANSWER TYPE, (Page 114)
(Ch-9 Nutrition Srijan Publication ICSE Class-9 Biology Solutions )
1. Name the deficiency disease caused due to the deficiency of the following:
(a) Riboflavin
(b) Protein
(c) Retinol
(d) Cyanocobalamin
(e) Ascorbic acid
(f) Iron
Answer:
(a) Cheilosis , Itching and burning of eyes.
(b) Kwashiorkor, Marasmus
(c) Night blindness, Xerophthalmia
(d) Pernicious anemia
(e) Scurvy
(f) Anemia
2. Give the name of vitamin/mineral associated with the following nutritional disorders.
(a) Anaemia (b) Beri-beri (c) Goitre (d) Scurvy
Answer:
(a) Iron
(b) Vitamin B1
(c) Iodine
(d) Vitamin C
3. Give one word for each of the following:
(a) Food needed in very small quantity, with no energy value but essential for resistance against diseases.
(b) A macromolecule formed by the linking of hundred of thousands of amino acids.
(c) Disease caused due to deficiency of vitamin D.
(d) Antiscurvy vitamin.
Answer:
(a) Vitamins
(b) Proteins
(c) Rickets
(d) Vitamin C
4. Complete the following statements:
(a) Starch is formed of …………… molecules.
(b) Absence of roughage in diet leads to …………….
(c) Dietary fibres are composed of …………..
(d) Children with shrivelled body, loose and wrinkled skin suffer from …………………
(e) Antisterility vitamin is …………….
Answer:
(a) Sugar
(b) Constipation
(c) Plant cell wall
(d) Marasmus
(e) Vitamin E
5. Match the Columns.
| Column A | Column B |
| (a) Beri-beri | (i) Vitamin A |
| (b) Pernicious anaemia | (ii) Niacin |
| (c) Scurvy | (iii) Vitamin B12 |
| (d) Rickets | (iv) Vitamin B4 |
| (e) Xerophthalmia | (v) Vitamin C |
| (f) Night Blindness | (vi) Vitamin D |
| (g) Pellagra | (vii) Vitamin B1 |
Answer:
| Column A | Column B |
| (a) Beri-beri | (vii) Vitamin B1 |
| (b) Pernicious anaemia | (iii) Vitamin B12 |
| (c) Scurvy | (v) Vitamin C |
| (d) Rickets | (vi) Vitamin D |
| (e) Xerophthalmia | (i) Vitamin A |
| (f) Night Blindness | (iv) Vitamin B4 |
| (g) Pellagra | (ii) Niacin |
B. Short Answer Type Questions (Page 114)
(Ch-9 Nutrition Srijan Publication ICSE Class-9 Biology Solutions )
1. Give reasons for the following:
1. Cellulose is not digested in humans whereas cows can digest it.
2. Doctors recommend to avoid taking animal fats.
3. Proteins are described as body building food.
4. Glucose provides instant energy
Answer:
1. Cow are able to digest cellulose but not humans as they have some special enzymes which helps them to digest cellulose but human lacks these enzymes.
2. Eating too much saturated fat can increase blood cholesterol levels and LDL (bad) cholesterol levels. Traditionally, doctors have linked higher saturated fat intake with increased heart disease risks. This idea has been called into question more recently.
3. Proteins are called bodybuilding food because they are one of the building blocks of body tissue and used to repair them. They help us in fighting with infection and to improve the immune system of our body. They also serve as a fuel source, as our body uses extra protein for energy.
4. It is directly absorbed into the bloodstream and into all the cells. Once inside, the glucose undergoes oxidation that results in the release of Adenosine Triphosphate (ATP), a high-energy molecule that provides energy for the cell. This is why we get instant energy from glucose
C. Long Answer Type Questions
Nutrition ICSE Class-9th Biology Solutions Srijan Publishers
Answer the following questions:
Q-1. Which type of carbohydrate cannot be digested in our body? Why is it regarded as the essential component or food?
Ans- Fiber is one kind of carbohydrate. It is sometimes called roughage or bulk. Fiber is the part of plant foods that our bodies do not break down during digestion. Because fiber isn’t digested, it doesn’t give us calories.
Q-2 A person complains of difficulty in seeing in darkness He is advised to include fish liver oil, milk and carrots or fruits with yellow colour in his diet. Why?
Ans- The persons who have problem in their eye have to eat food contained proteins. Fish liver oil ,milk, carrots and fruits with yellow color have more proteins in them
Q-3. Which food stuff yields the maximum amount of energy on complete combustion and how much?
Ans :- Fat produce more energy. Explanation: ONE MOLE OF FAT RELEASE 9.45 kcal of energy whereas one mole of carbohydrate produce 4.2 kcal ENERGY
Q- 4. Give benefits of vitamin A.
Ans-Vitamin A is important for normal vision, the immune system, and reproduction. Vitamin A also helps the heart, lungs, kidneys, and other organs work properly
Q-5. Why are vitamins important for animals even when they do not produce energy?
Ans-they need vitamins for body growth, maintenance and for various metabolic activities done in the body of the anima
Q-6. What will happen if the food of a person has a deficiency of iodine? Explain.
Ans- Iodine deficiency is the most common cause of thyroid enlargement and goiter Within a goiter, nodules can develop. Patients with a large goiter may experience symptoms of choking, especially when lying down, and difficulty swallowing and breathing.
Q-7. What are the three groups of food based on their nutritional value?
Ans-Food are classified into three groups on the basis of the function they perform in our body. Name the three categories, and briefly give their functions. Also give their two sources each.
energy giving food
bodybuilding food
regulatory and protective foods
Q- 8. What is the importance of cereals and pulses in our food?
Ans-Cereals contain high levels of carbohydrates but are good source of Dietary Fiber, Vitamin A, B6, B12, C, Calcium, Phosphorus, amino acids and other minerals. Pulses have comparatively lower contents in carbohydrates but are rich in other nutrients like proteins, amino acids, fibre, vitamins and minerals
D. Multiple Choice Questions
(Ch-9 Nutrition Solutions for ICSE 9th Biology Srijan Publishers)
Choose the correct answer.
1. The energy giving foods are:
(a) Carbohydrates and fats
(b) Carbohydrates and proteins
(c) Fats and proteins
(d) All the above
Answer: (a) Carbohydrates and fats
2 The sources of body building food are
(a) Cereals
(b) Butter and ghee
(c) Pulses and paneer
(d) Sea food
Answer: (c) Pulses and paneer
3. The protective foods are:
(a) Green leafy vegetables
(b) Milk and eggs
(c) Bread and potato
(d) Both (a) and (b)
Answer: (d) Both (a) and (b)
E Application/Skill-based Question (Page 103)
(Nutrition ICSE 9th Solutions Srijan Publishers)
Look at the given picture and answer the following questions :
(a) Which food nutrients are found in these food?
(b) Name the vitamins and minerals found in these food.
(c) Name the deficiency diseases caused due to deficiency of above said vitamins and minerals.
Answer:
(a) Vitamins and Minerals
(b) Vitamins – A, D, E, B1, B2, B4, B6, B12.
Minerals – Sodium, Calcium, Phosphorus, Iron
(c) Vitamin A – Night blindness, Xerophthalmia
Vitamin D – Rickets, Osteomalacia
Vitamin E – Distraction of RBCs.
Vitamin B1 – Beri-beri
Vitamin B2 -cheilosis
Vitamin B4 – Pellagra
Vitamin B6 – Causes convulsions in children
Vitamin B12 – Pernicious Anemia
Sodium – Muscular cramps
Calcium – Rickets
Phosphorus – Deficiency leds to soft bones.
Iron – Anemia
Thanks
