PAPER CODE: 532/1
MOCK REF: PLE-825220
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.
What is Primary Health Care (PHC)? [1 mark]
P.5 • Primary Health Care (PHC)
2.
Why is it raised legs that are required when giving first aid to a person who has fainted? [1 mark]
P.6 • Accidents and First Aid
3.
Give one use of a pair of scissors or razor blade in hair grooming. [1 mark]
P.4 • Personal Hygiene
4.
Why is it recommended to use clean wood ash at a tip-tap facility when soap is not available? [1 mark]
P.5 • Primary Health Care (PHC)
5.
Name the part of a cow that changes the color when a cow is on heat. [1 mark]
P.6 • Keeping Cattle
6.
State one activity a school Science Club can undertake to combat environmental deforestation. [1 mark]
P.5 • Managing Changes in the Environment
7.
To which class of vertebrates do snakes and lizards belong? [1 mark]
P.5 • Classification of Animals
8.
Name the deficiency disease caused by a severe lack of Vitamin C in the diet. [1 mark]
P.5 • Food and Nutrition
9.
Why is an electric fuse constructed using a wire with a low melting point? [1 mark]
P.7 • Electricity
10.
State the scientific function of soap in cleaning clothes. [1 mark]
P.6 • Science at Home and in Our Community
11.
What scientific term describes the direct change of a solid into a gas without melting into a liquid? [1 mark]
P.5 • Types of Changes in the Environment
12.
Why is a tapeworm classified as an endoparasite? [1 mark]
P.6 • Classification of Animals
13.
How is tepid sponging useful to a casualty with high fever? [1 mark]
P.6 • Accidents and First Aid
14.
State one method of reducing echoes in large school assembly halls. [1 mark]
P.6 • Sound Energy
15.
What is the color code of the earth wire in a modern standard three-pin plug? [1 mark]
P.7 • Electricity
16.
Give one effect of thick clouds in the atmosphere. [1 mark]
P.4 • Weather Changes Around Us
17.
Give any one reason why a residential living house should have large windows on opposite walls. [1 mark]
P.5 • Primary Health Care (PHC)
18.
Mention any one personal hygiene practice that prevents bad body odour. [1 mark]
P.6 • Personal Hygiene
19.
State one reproductive similarity between bread moulds (fungi) and ferns (plants). [1 mark]
P.5 • Fungi and Non-Flowering Plants
20.
State any two ways in which washing clothes is important to human health. [1 mark]
P.6 • Science at Home and in Our Community
21.
State any one danger of cigarette smoking to the human respiratory system. [1 mark]
P.7 • The Respiratory System
22.
Give any one role of water during seed germination. [1 mark]
P.5 • Plant Life
23.
State the function of the U-trap in a water closet (flush toilet). [1 mark]
P.6 • Sanitation
24.
State one way of preventing the spread of Tuberculosis (TB). [1 mark]
P.7 • The Respiratory System
25.
Name the structure on the head of a tapeworm used for attachment to the intestinal wall. [1 mark]
P.6 • Classification of Animals
26.
State the role of anhydrous calcium chloride in the laboratory investigation of rusting. [1 mark]
P.5 • Types of Changes in the Environment
27.
State any one function of the diaphragm during the process of breathing. [1 mark]
P.6 • The Respiratory System
28.
State the difference between sand soil and clay soil in terms of particle size. [1 mark]
P.4 • Soil
29.
State the function of hooks and suckers on the scolex of a tapeworm. [1 mark]
P.6 • Classification of Animals
30.
State one way in which school children can help their community control the spread of malaria. [1 mark]
P.5 • Control of Malaria
31.
State one way in which food can get contaminated with disease-causing germs in a home. [1 mark]
P.5 • Food and Nutrition
32.
State any one advantage of breast milk over commercial infant formula milk. [1 mark]
P.5 • Food and Nutrition
33.
How does chlorine make water safe for drinking? [1 mark]
P.6 • Science at Home and in Our Community
34.
Why are small gaps left between railway rails during track construction? [1 mark]
P.5 • Heat Energy
35.
Give any one example of an emotional change in adolescents. [1 mark]
P.6 • The Reproductive System
36.
The diagram below shows an animal in the group of invertebrates. (Snail diagram) Name the animal shown. [1 mark]
P.6 • Classification of Animals
37.
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
38.
Why is a husband and his wife advised to go for treatment together when they contract gonorrhoea? [1 mark]
P.6 • The Reproductive System
39.
State any one primary sex characteristic in human females. [1 mark]
P.6 • The Reproductive System
40.
What is meant by the term balanced diet? [1 mark]
P.5 • Food and Nutrition
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
Classify each of the following changes taking place in the environment as either a physical, chemical, or biological change:
(a) Burning dry wood into ash (1 mark)
(b) Melting of ice into water (1 mark)
(c) Growth of a puppy into an adult dog (1 mark)
(d) Evaporation of water into steam (1 mark)
42.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Classification of Animals
(a) State the name of insects that live and work together.
(b) Give any one way in which insects are useful to people.
(c) State any two human activities that are dangerous to insects in the environment.
43.
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)
44.
Structured & Practical Assessment Item
[4 MARKS]
P.4 • Vectors and Diseases
(a) Name the insect vector that spreads Sleeping Sickness (Trypanosomiasis) to humans. (1 mark)
(b) Which developmental stage of a housefly causes food contamination? (1 mark)
(c) What do adult female tsetse flies and female anopheles mosquitoes feed on? (1 mark)
(d) How does an infected mosquito transmit malaria parasites to humans? (1 mark)
45.
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.
46.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Accidents and First Aid
(a) Name the kind of water recommended to be used when tepid sponging a casualty of high fever.
(b) State the scientific reason why the water mentioned in (a) is used instead of very cold water.
(c) Mention any two signs of dysentery in humans.
47.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • The Reproductive System
Match the reproductive structures in Part A with their correct physiological functions in Part B:
Epididymis
Scrotum
Cervix
Vas deferens
48.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Keeping Goats, Sheep, and Pigs
The diagram below represents housing and management in goat farming:
(a) State the role of guard rails in a farrowing pen. (1 mark)
(b) Why should the floor of a goat shed be made of wooden slats raised off the ground? (1 mark)
(c) Name any two routine operations carried out in a livestock crush. (2 marks)
49.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Keeping Cattle
(a) Name the system of keeping cattle where animals are permanently kept and fed inside stalls. (1 mark)
(b) State any one type of organic manure obtained from cattle kept in this system. (1 mark)
(c) Give any two advantages of the cattle keeping system named in (a). (2 marks)
50.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Science at Home and in Our Community
(a) What is meant by the term silting?
(b) State the major cause of silting in water bodies.
(c) Apart from killing fish, give one way in which silting affects aquatic life.
51.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • The Reproductive System
(a) Write down any two disorders that affect the male reproductive system.
(b) State any one advantage of child spacing to a mother in a family.
(c) Give any one reason why females are highly affected by HIV/AIDS during intercourse.
52.
Structured & Practical Assessment Item
[4 MARKS]
P.5 • Keeping Goats, Sheep, and Pigs
Measly pork is a serious public health problem in Uganda:
(a) What causes measly pork in pigs? (1 mark)
(b) Name the parasite whose larvae cause this condition. (1 mark)
(c) State any two ways a community can prevent tapeworm transmission from pigs to humans. (2 marks)
53.
Structured & Practical Assessment Item
[4 MARKS]
P.6 • Science at Home and in Our Community
State the importance of the following steps in cleaning clothes at home:
(i) Sorting
(ii) Soaking
54.
Structured & Practical Assessment Item
[4 MARKS]
P.7 • Forestry and Agroforestry
(a) Define the term agroforestry. (1 mark)
(b) State any one characteristic of suitable tree species used in agroforestry. (1 mark)
(c) Give any two benefits of agroforestry to a farmer. (2 marks)
55.
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?
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