PAPER CODE: 532/1
MOCK REF: PLE-376100
Uganda National Examinations Board
Primary Leaving Examination (Standard Science Mock)
INTEGRATED SCIENCE
TIME: 2h 15m
MARKS: 100
★ CANDIDATE QUESTION PAPER ★
Instructions to Candidates:
- This paper consists of two sections: Section A and Section B.
- Section A has 40 questions (40 marks). Section B has 15 questions (60 marks).
- Answer all questions in both sections. All answers must be written in the spaces provided on this question paper.
- All answers must be written in blue or black ballpoint pen. Diagrams should be drawn in pencil.
- Unnecessary crossing of work and illegible handwriting may lead to loss of marks.
Section A: (Questions 1 to 40) — 40 Marks
1 Mark eachQuestion 1 to 40 carry one mark each. Answer all questions in the spaces provided.
1.
State any one function of the diaphragm during the process of breathing. [1 mark]
P.6 • The Respiratory System
2.
Name the longest and strongest bone found in the human body. [1 mark]
P.7 • The Muscular and Skeletal System
3.
State the role of anhydrous calcium chloride in the laboratory investigation of rusting. [1 mark]
P.5 • Types of Changes in the Environment
4.
State any one danger of bottle feeding to a four-month-old baby. [1 mark]
P.5 • Food and Nutrition
5.
Give any two examples of water impurities. [1 mark]
P.6 • Science at Home and in Our Community
6.
State one personal hygiene activity done using a nail cutter or razor blade. [1 mark]
P.4 • Personal Hygiene
7.
How does painting an iron gate prevent it from rusting? [1 mark]
P.5 • Types of Changes in the Environment
8.
Give one safety measure to prevent electric shock in a domestic home. [1 mark]
P.6 • Accidents and First Aid
9.
State one reason why a torch may fail to produce light even when it is switched on. [1 mark]
P.7 • Electricity
10.
Mention any two environmental conditions necessary for viable seeds to germinate. [1 mark]
P.5 • Plant Life
11.
State any one advantage of castrating male piglets not intended for breeding. [1 mark]
P.5 • Keeping Goats, Sheep, and Pigs
12.
State the function of a ligament at a movable joint. [1 mark]
P.7 • The Muscular and Skeletal System
13.
In which method of making water clean do you first allow the impurities to settle at the bottom of a container? [1 mark]
P.6 • Science at Home and in Our Community
14.
Name the deficiency disease caused by a severe lack of Vitamin C in the diet. [1 mark]
P.5 • Food and Nutrition
15.
State one characteristic of essential drugs in Primary Health Care. [1 mark]
P.5 • Primary Health Care (PHC)
16.
State one way of increasing the electrical current produced by a bicycle dynamo. [1 mark]
P.7 • Electricity
17.
State the reason why woolen clothes should be dried flat without wringing (twisting). [1 mark]
P.6 • Science at Home and in Our Community
18.
Why is a tapeworm classified as an endoparasite? [1 mark]
P.6 • Classification of Animals
19.
Why does prolonged hunger sometimes lead to fainting? [1 mark]
P.6 • Accidents and First Aid
20.
Give any one biological change that takes place in flowering plants. [1 mark]
P.5 • Types of Changes in the Environment
21.
Name the type of optical lens that diverges light rays. [1 mark]
P.7 • Light Energy
22.
What is meant by the term annual crops? [1 mark]
P.5 • Crop Growing
23.
Why is it not advisable to give a convulsing or fainted person food to eat or water to drink? [1 mark]
P.6 • Accidents and First Aid
24.
Name two methods of obtaining clean water for washing at home. [1 mark]
P.6 • Science at Home and in Our Community
25.
Name the female parent in goat farming. [1 mark]
P.5 • Keeping Goats, Sheep, and Pigs
26.
Why is the floor of a modern pigsty built with a gentle slope towards the drainage channel? [1 mark]
P.5 • Keeping Goats, Sheep, and Pigs
27.
Name any one type of latrine. [1 mark]
P.6 • Sanitation
28.
State the fundamental law of electrostatics concerning like and unlike charges. [1 mark]
P.7 • Electricity
29.
Which weather condition is most suitable for solar drying harvested crops? [1 mark]
P.4 • Weather Changes Around Us
30.
Name any one vital organ protected by the human rib cage. [1 mark]
P.7 • The Muscular and Skeletal System
31.
Why does the water level in a measuring cylinder rise when a stone is completely immersed in it? [1 mark]
P.5 • Matter and Energy
32.
State any two ways in which washing clothes is important to human health. [1 mark]
P.6 • Science at Home and in Our Community
33.
State one way PIASCY messages help primary school pupils prevent HIV/AIDS infection. [1 mark]
P.6 • The Reproductive System
34.
To which class of vertebrates do tortoises and chameleons belong? [1 mark]
P.5 • Classification of Animals
35.
Give any one danger of rusting to a school farmer's tools. [1 mark]
P.5 • Types of Changes in the Environment
36.
Why should a farmer select healthy and viable seeds before planting? [1 mark]
P.5 • Crop Growing
37.
What happens when cooking oil is poured onto water in a glass? [1 mark]
P.5 • Matter and Energy
38.
Name the disorder of the skeletal system where a bone moves away from its normal position at a joint. [1 mark]
P.7 • The Muscular and Skeletal System
39.
Give one effect of thick clouds in the atmosphere. [1 mark]
P.4 • Weather Changes Around Us
40.
What is the color code of the earth wire in a modern standard three-pin plug? [1 mark]
P.7 • Electricity
Section B: (Questions 41 to 55) — 60 Marks
4 Marks eachQuestion 41 to 55 carry four marks each. All answers must be written in the spaces provided.
41.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Types of Changes in the Environment
Human activities bring about changes in the environment:
(a) Define the term afforestation. (1 mark)
(b) Give any two reasons why people cut down trees on a large scale (deforestation). (2 marks)
(c) State one way in which cutting down trees leads to severe environmental flooding. (1 mark)
42.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • The Muscular and Skeletal System
The diagram below illustrates a Primary 7 wooden teaching arm model:
[Upper Wood] connected by a [Hinge] to [Lower Wood], with [Cord] and [Rubber Band].
(a) Which bone in the human arm is represented by the upper wood?
(b) Name the muscle represented by: (i) Cord (ii) Rubber band
(c) What anatomical joint is represented by the hinge?
43.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • The Muscular and Skeletal System
(a) Mention two connective tissues found at a movable joint in the human skeleton.
(b) State the difference in function between a tendon and a ligament.
(c) State any two ways in which friction is reduced at a movable joint.
44.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • The Reproductive System
(a) Name the fluid that protects the human foetus from mechanical shock and physical injury inside the womb. (1 mark)
(b) State any two functions of the umbilical cord during pregnancy. (2 marks)
(c) Name the organ in the female reproductive system that produces mature ova. (1 mark)
45.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • The Circulatory System
(a) Name the main blood vessel that brings deoxygenated blood from body tissues to the right atrium of the heart. (1 mark)
(b) Which type of blood is carried by the pulmonary vein? (1 mark)
(c) State any two structural adaptations of arteries to their function. (2 marks)
46.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • The Respiratory System
(a) Name the gas needed for: (i) Aerobic respiration (1 mark), (ii) Produced as a waste product of respiration (1 mark)
(b) State any two dangers of violent wind in the environment. (2 marks)
47.
Structured & Practical Assessment Item
[4 MARKS]
P.4 • Soil
An experiment was carried out where equal amounts of water were poured through equal volumes of clay soil and sand soil in funnels lined with cotton wool:
(a) Which physical soil property was being investigated? (1 mark)
(b) State the role of cotton wool placed at the neck of the funnel. (1 mark)
(c) In which type of soil did water drain fastest, and give a reason why. (2 marks)
48.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • Electricity
(a) State the difference between static electricity and current electricity.
(b) Describe how static charges are produced on a plastic ruler.
(c) State two safety precautions taken to protect tall school buildings against lightning strikes.
49.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Food and Nutrition
The table below shows two children suffering from malnutrition:
(a) Name the deficiency disease Child X is suffering from if he has swollen feet, moon face, and reddish hair. (1 mark)
(b) Name the deficiency disease Child Y is suffering from if he has extreme wasting, visible ribs, and an old person's face. (1 mark)
(c) What nutrient is severely lacking in Child X's diet? (1 mark)
(d) Give any one food you would feed Child X to cure this condition. (1 mark)
50.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Food and Nutrition
Weaning is an important milestone in infant growth:
(a) Define the term weaning. (1 mark)
(b) At what age should weaning start? (1 mark)
(c) Why should weaning NOT start earlier than this recommended age? (1 mark)
(d) State one danger of feeding a weaning child on plain maize porridge without enriching it. (1 mark)
51.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Science at Home and in Our Community
The diagram below shows a simple setup of making water clean. Study and use it to answer the questions that follow:
[ Water poured here ]
↓
|~~~~~~~~~~~~~~~| | Coarse Stones | <--- Container T \ / \ Clean Water/ \___________/
↓
[---------] | S | <--- Container S |_________|
(a) Name the method used above.
(b) Apart from coarse stones, name any two other local materials that can be placed in container T.
(c) Why should the clean water obtained in container S be boiled before drinking?
52.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Food and Nutrition
Vulnerable groups have special dietary requirements:
(a) Why is a convalescent person classified as a vulnerable individual? (1 mark)
(b) Which class of food should be increased in a convalescent's diet? (1 mark)
(c) State the nutritional role of dietary roughage in human digestion. (1 mark)
(d) Name any one local food source rich in dietary roughage. (1 mark)
53.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Keeping Goats, Sheep, and Pigs
A farmer noticed his goats were limping and producing a bad smell from their hooves:
(a) Which livestock disease is the farmer's herd likely suffering from? (1 mark)
(b) State the environmental condition in the goat pen that promotes this disease. (1 mark)
(c) Outline any two measures the farmer should take to control this disease. (2 marks)
54.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Science at Home and in Our Community
Name the step used in cleaning clothes that:
(a) Removes excess water from the clothes.
(b) Removes soapy water from the washed garments.
55.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Primary Health Care (PHC)
The diagram below shows a sanitary homestead structure:
(a) Name the structure described as a raised wooden rack used for drying utensils. (1 mark)
(b) Give two reasons why washed plates should be dried on this structure rather than on the ground. (2 marks)
(c) How does direct sunlight assist in the sanitation of utensils on this rack? (1 mark)
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