Food Nutrients
17 Grade 5 Agriculture questions on Food Nutrients, with worked marking schemes. 17 questions are available on this topic in full.
Question 1
1 markMilk and green leafy vegetables such as terere provide the mineral calcium. Calcium is needed in the body to:
A. Make strong bones and teeth
B. Add flavour to food
C. Give quick energy for running
D. Cool the body down
(1 mark)
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1 markA child who does not eat enough proteins for a long time may become weak and fail to grow well. This shows that a lack of a nutrient in the diet can cause a:
A. Good harvest
B. Deficiency disease/poor health
C. Balanced diet
D. Strong body
(1 mark)
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4 marksProteins are called body-building foods.
(a) State two functions of proteins in the body.
(b) Give two examples of foods rich in proteins.
(4 marks)
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3 marksFoods are grouped according to the work they do in the body.
(a) Name the class of nutrients called 'energy-giving' foods.
(b) Give two examples of Kenyan foods rich in this nutrient.
(3 marks)
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6 marksWater is an important part of every diet even though it does not give energy. Give three ways in which water is useful in the body.
(6 marks)
Marking scheme
Any three, 2 marks each: it helps in digestion of food; it helps to remove waste from the body (as urine and sweat); it cools the body/helps control body temperature; it carries nutrients to different parts of the body; it makes up a large part of the blood and body cells.
Question 6
1 markA mother is advised to give her growing child beans, eggs, fish and milk. These foods are important MAINLY because they:
A. Add water to the body
B. Make the food taste sweet
C. Help build the body and repair worn-out parts
D. Give the body energy only
(1 mark)
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1 markA balanced diet is a meal that contains:
A. A very large amount of one type of food
B. All the classes of nutrients in the right amounts
C. Only fruits and vegetables
D. Only foods that give energy
(1 mark)
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4 marksExplain what is meant by a balanced diet, and give one reason why children should eat a balanced diet.
(4 marks)
Marking scheme
Meaning (2 marks): a balanced diet is a meal that contains all the classes of nutrients (carbohydrates, proteins, vitamins, minerals, fats/oils and water) in the correct amounts/proportions. Reason (2 marks): so that the body gets everything it needs to grow well, stay healthy, have energy and be protected from diseases.
Question 9
1 markA pupil is served a plate with ugali, sukuma wiki and beans. Which class of nutrients that protects the body is BEST supplied by the sukuma wiki?
A. Carbohydrates
B. Vitamins
C. Fats and oils
D. Proteins
(1 mark)
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1 markWhich of the following is a good plant source of proteins commonly eaten in Kenyan homes?
A. Cooking oil
B. Cabbage
C. Beans
D. Ripe banana
(1 mark)
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1 markCooking oil, avocado and groundnuts contain a lot of fats and oils. One important use of fats and oils in the body is to:
A. Build strong bones only
B. Give the body a store of energy and keep it warm
C. Protect the body from all diseases
D. Remove waste from the body
(1 mark)
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1 markWhich nutrient makes up the largest part of the body, helps in digestion and keeps the body cool, yet gives no energy?
A. Proteins
B. Water
C. Vitamins
D. Fats
(1 mark)
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6 marksPlan a simple balanced lunch for a Grade 5 pupil using foods found in Kenya. For each food you choose, state the nutrient it provides. Give at least three foods.
(6 marks)
Marking scheme
Award 2 marks per correct food plus matching nutrient, to a maximum of 6. Examples: ugali/rice – carbohydrates; beans/fish/meat/eggs – proteins; sukuma wiki/managu or an orange – vitamins/minerals; a little cooking oil/avocado – fats and oils; a glass of water/milk – water/minerals. Must include at least one energy food, one body-building food and one protective food for full marks.
Question 14
4 marksA family always eats only ugali and cooking oil for most meals.
(a) Which two classes of nutrients are missing from these meals?
(b) Suggest one food they can add to supply each missing nutrient.
(4 marks)
Marking scheme
(a) 2 marks, 1 each: proteins; vitamins/minerals (accept naming vitamins and minerals). (b) 2 marks: for proteins – beans/eggs/fish/milk/meat; for vitamins/minerals – vegetables (sukuma wiki, managu)/fruits (oranges, mangoes). (1 mark each correct food.)
Question 15
1 markOranges, mangoes and green vegetables such as managu help to protect the body from diseases. They are rich in:
A. Carbohydrates
B. Vitamins
C. Fats and oils
D. Proteins only
(1 mark)
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3 marksVitamins and minerals are called protective foods. State three foods that are rich in vitamins or minerals and are commonly available in Kenya.
(3 marks)
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1 markUgali, rice and sweet potatoes are eaten mostly to give the body energy for work and play. These foods belong to which class of nutrients?
A. Vitamins
B. Minerals
C. Carbohydrates
D. Proteins
(1 mark)
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