SUREKEY EXAMINATIONS BOARD

PRE-PLE EXAMINATION SERIES ONE

2022
INTEGRATED SCIENCE MARKING GUIDE

PREPARED BY:
MR. JAMIE HUMPHERY: 0757 282305
MR. MUBIRU SULAIMAN: 0700 758668

“Don’t speak for Quality, Let the Quality

Speak for itself”
© 2022 Surekey Examinations Board - SKEB
 SECTION A: 40 MARKS

Questions 1 to 40 carry one mark each

1. Name the disease vector that breeds in fast flowing water.

• Simulium fly • Simulid fly
• Black fly • Jinja fly

2. State any one way in which coal is used as an energy resource.

• Used as a fuel in steam engines
• Used to make tar for surfacing roads
• Used in steel industries for smelting metals
• Used in filters for water and air purification
• Used as fuel for steam-electric power generation
• Used for heating houses during winter in some countries
• Used for cooking
• Burt to produce heat
• Used in blast furnace to melt iron

3. Which process in animals increases the amount of carbon dioxide in

in the atmosphere?
• Respiration

4. Name the component of soil formed from weathering of rocks.

• Rock particles

5. What is the function of a micropyle on a germinating bean seed?

• Lets in air and moisture into the seed
(Reject; lets in oxygen and water into the seed)

The diagram below shows a beak of a bird. Use it to answer questions

6 and 7.

6. What kind of food does a bird with the beak above eat?
• Nectar
• Plant juice
(Reject; nector, pollen)
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7. How are birds with such a beak useful to crop farmers?
• Pollinates flowers in farmer’s crops
(Reject; pollinates farmer’s crops because not every part of a crop is
pollinated)

8. Which system of keeping cattle controls tickborne diseases on the

farm?
• Paddock grazing
• Paddocking
• Rotational grazing

9. State the principle on which an electric bell works.

• Electromagnetism
10. State any one condition under which a mother may be stopped from
breast feeding the baby.
• When the mother is dead
• When the mother is HIV positive
• When the mother has breast cancer
• When the mother cannot produce enough breast milk
• When the mother is not always around

11. Give any one example of the chemicals used in treating water for
drinking.
• Chlorine • Potassium
• Fluorine permanganate
• Aqua • Iodine
• Water guard • Aluminium silicate
• Calcium chloride
12. State any one way in which the breeding of lice can be controlled.
• Bathing regularly
• Wash clothes regularly
• Spread beddings in sunshine
• Ironing clothing and bedding
• Trimming long hair
• Combing hair with clean combs
• Avoid sharing clothes
(Reject; promoting personal hygiene)

13. Which method of heat transfer enables people to light charcoal stoves?
• Convection
(Reject; radiation) 3
14. State any one factor that a bee keeper should consider when setting
a hive.
• Quiet place. • Smoke free place.
• Cool place. • Pest free place.
• Distance from homes, roads and schools.
• A place with flowers.
• A place with water nearby .
15. How is a maize plant able to withstand the weight of the fruits during
flowering stage?
• By developing prop roots on the nodes which provide extra
support to the plant.
• Prop roots grow to provide extra support to the plant.
(Reject; they have prop roots)
16. State the method used to separate liquids with different densities.
• Separating funnel method
• Decantation (Reject; fractional distillation)
17. Give any one way in which a school health committee is important at
School.
• Organizes cleaning campaigns in a community
• Supervises Primary Health Care activities
• Conducts health parades in the school
• Plans for health activities
18. Why should houses of goats be built with wooden floors?
• To enable droppings to go down through the spaces in the
floor

The diagram below is of a device used to store sound. Use it to

answer questions 19 and 20.

19. Name the method of storing sound that involves the use of the above
device.
• Recording
(Reject; recording using a memory card)

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20. State any one way of reproducing sound stored using the above
device
• Playing using a phone • Playing using a DVD player
• Playing using a woofer • Playing using a computer

21. How is the urinary bladder different from the gall bladder in terms of
their function?
• The urinary bladder stores urine while the gall bladder
stores bile

22. State any one factor that a doctor considers when prescribing drugs
to a patient.
• Age of the patient
• Condition of the illness
• Gender
• Presence of underlying health conditions
• Weight of the patient
• Method of administration of the drug
• Type of disease
• Side effects of the drug to the patient
• Type of drug to be prescribed

23. Name the method of preserving food where blocks of ice are put in
fresh fish.
• Freezing (Reject refrigeration)

24. State any one way in which the spread of germs can be prevented.
• Through proper disposal of faeces - Boiling water for drinking
• Through proper disposal of rubbish – Scrubbing urinals
• Washing hands before eating food. -Killing vectors by spraying
• Cooking food from clean kitchen. -Having children immunized
• Covering wounds and cuts.
• Having clean latrine/toilet
• Destroying breeding places of vectors
The experiment below was carried out to find out how light travels.
Study and use it to answer questions 25 and 26.

hole
1 2 3
observer

5
candle
cardboard
25. Give the role of the candle in the above experiment.
• It is a source of light • It provides light

26. State what would happen to the observer if cardboard 2 was displaced
in a way that its hole is not in the same line with that of 1 and3.
• Light would not reach the observer’s eye
Reason: due to blockage of light by the displaced cardboard

27. How is ash useful in an Ecosan latrine?

• Dries faeces so that they are taken to the garden as manure
• Reduces unpleasant smell in the latrine
• Kills germs in faeces
• Makes faeces less attractive to house flies for breeding there.
28. Name the type of temporary magnet made using electricity.
• Electromagnet (reject; electro magnet)
29. Give any one reason why used engine oil should be applied on wood
for electricity poles.
• To make them water resistant
• To prevent rotting
• To prevent destruction by termites, wood shrimps and
carpenter bees

30. Apart from synovial fluid, which other substance helps to reduce
friction between bones at a joint?
• Cartilage • Gristle

31. Mention any one system of keeping poultry that can be used for
commercial purposes.
• Battery system • Cage system
• Deep litter system
(Reject; battery cage system)

32. Give any one characteristic of crustaceans.

• They have a hard crusty skin
• They have a pair of antennae on the head
• They breathe through gills
• They have more than four jointed legs
• They have an open circulatory system
• They have two main body divisions
• Most of them live in water

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33. How do hookworms affect the circulatory system?
• Hookworms suck blood from the body and lead to anaemia
(Reject; the feed on blood)

The diagram below shows a method of artificial vegetative

propagation. Use it to answer questions 34 and 55.

34. Identify the method of artificial propagation shown above.

• Layering

35. Give any one advantage of the above method of propagation.

• New plants mature faster
• The farmer gets high yields
• Desired characteristics of the plant are maintained
• Plants need less attention
• Only one plant is needed to produce an offspring
• Plants which do not produce seeds are propagated
• Helps plants to escape risky seedling stage
• Controls unnecessary distribution of plants in an area

36. Which body system is attacked by bronchitis?

• Respiratory system

37. Why does a pen fail to write on paper where oil has been poured?
• There is less friction between the pen and the paper
(Reject; there is no friction on the paper)

38. Mention any one condition that can lead to fever.

• Diseases like malaria, typhoid and measles
• Food poisoning
• Putting on too tight clothes

7
39. Give any one way in which non bio degradable wastes can be reused
at home.
• For holding construction materials
• For making dustbins
• For holding animal feeds
• Used as laying nests for poultry
• Can be used as play materials by children
• Can be used for drenching animals
• Used in making crafts
• For carrying harvested food

40. Which type of changes in living things do not involve chemical

reactions?
• Biological changes
(Reject; physical changes/ natural changes)

SECTION B: 60 MARKS
Questions 41 to 55 carry four marks each.

41. a) Name the group of crops that provide multiple harvests.

• Perennial crops

b) Write down any two examples of crops named in (a) above.

• Tea • Oranges • Pawpaw
• Coffee • Avocados • Passion fruits
• Cocoa • Sisal • Pears
• Mangoes • Coconut • Oil palm
• Bananas • Vanilla • Lemons

c) State any one method used when harvesting the crops written
in (a) above.
• hand picking
• Plucking
• Cutting

8
42. The diagram below shows a farm tool. Study and use it to answer the
questions that follow.

a) Name the farm tool shown in the diagram above.

• Burdizzo

b) Which farm practice is done using the farm tool shown in the
diagram above?
• Castration

c) State any one reason why farmers carryout the farm practice
given in (b) above.
• To control inbreeding
• To make animals docile
• To make animals grow fast and fat
• To prevent unnecessary mating
• To remove bad smell from animals
d) Give any one way of caring for the farm tool shown in the
diagram above.
• Painting
• Keeping it in a cool dry place
• Oiling or greasing to reduce friction
• Washing and drying it after use before storage

43. a) State the importance of each of the following parts to a vein.

i) thin walls. Allow smooth flow of blood
ii) wide lumen. Allow more blood to flow with less resistance
b) How are arteries able to prevent the back flow of blood yet they
have no valves?
• By transporting blood at higher pressure
c) Why do arteries have thick walls?
• To withstand high blood pressure

9
44. a) State what happens to each of the following when ice melts;
i) volume decreases/reduces
ii) density increases
b) Give any two ways in which melting is important to people.
• It helps in formation of alloys
• It helps in extraction of honey
• It helps in ice skating
• It helps in recycling of metals and plastics
• It helps in forging metals
• It helps in obtaining water from ice
• It helps a fuse to work in an electric circuit
• It helps in preparing food using butter and ghee

45. The diagram below shows a certain plant process. Study and use it to
answer the questions that follow.

a) Name the plant process shown the diagram above.

• Transpiration

b) State any two factors that affect the rate of the above process.
• Temperature
• Humidity
• Wind
• Sunlight intensity
• Size of the plant leaves
• Number of leaves on the plant

c) In which one way is the above process beneficial to plants?

• It cools plants
• Allows plant roots to absorb more water from the soil

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46. a) Name the waste material excreted by the liver.
• Bile pigments

b) Apart from excreting wastes, give any two other functions of

the liver.
• Produces bile juice which emulsifies fats
• Stores vitamins and mineral salts like iron
• Metabolises medicines
• Detoxifies poison
• Regulates blood sugar levels
• Produces heat in the body
• Destroys old red blood cells in the body

c) Which disease of the liver is caused by excessive drinking of

alcohol?
• Liver cirrhosis • Cirrhosis

47. In the table below, list A shows alloys and list B shows the metals used
to make each alloy in the wrong order.

List A: alloy List B: metal

Brass Iron and copper
Bronze Copper and zinc
Solder Copper and tin
Steel Lead and tin

Write the correct combination of metals for each of the alloys in the
space provided below.
i) Brass Copper and zinc
ii) Bronze Copper and tin
iii) Solder Lead and tin
iv) Steel Iron and copper

48. a) State the importance of a cistern tank on a flush toilet.

• Stores water for flushing the toilet

b) Why is the cistern tank on a flush toilet raised above the bowl?
• To maximize pressure of flushing a water
• To increase pressure of water flow when flushed
NOTE: Be mindful and keen on the spelling of the word “flush”

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 c) In which two ways is the water that remains in the bowl of a
flush toilet after flushing of an advantage?
• Prevents smelly air from coming out from the septic tank
• Prevents the backflow of sewage in the toilet room
• Prevents houseflies from reaching faeces in the septic tank
• Keeps the toilet bowl hygienically clean

49. The diagram below shows a plastic bowl and a metallic bowl containing
hot soup which was left to cool. Study and use it to answer the
questions that follow.
plastic bowl metallic bowl

steam steam
hot soup hot soup

a) In which bowl will the soup cool faster?

• Metallic bowl

b) Why would the soup cool faster in the mug you have given in (a)
above?
• The metallic bowl is a good conductor of heat
• The metallic bowl conducts heat faster than the plastic one
(Reject; has a large surface area for evaporation)

c) What physical process leads to the cooling of soup in the bowls

shown in the above diagrams?
• Evaporation (Reject; evapouration/ cooling)
d) In which state of matter is soup shown in the above bowls?
• Liquid state

50. a) How does prolonged breast feeding help in birth control?

• Prevents pregnancy by preventing ovulation
• Delays monthly ovulation
• Delays the next pregnancy

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 b) Apart from prolonged breast feeding, mention any two other
natural methods of family planning.
• abstinence from sex (reject; abstenance)
• withdrawal method / coitus interruptus
• basal body temperature
• calendar method / rhythm method
• cervical mucus method
c) State any one way in which the use of natural methods of
family planning is better than artificial methods.
• Natural methods are cheaper and easier to use than
artificial methods
• Natural methods have no side effects to the body yet some
artificial methods have side effects to the body

51. The diagram below shows an experiment carried out by a Primary five
class. Study and use it to answer the questions that follow.

In air In water

small stone
big
water stone
big stone

a) In which medium does the stone weigh less?

• Water
b) Why does the stone weigh less in the medium you have given in (a)
above?
• Due to upthrust force of water
• The weight of the stone is reduced by the upthrust force in
water
c) Name the force that acts on the stone in water according to the
above experiment.
• Upthrust force //Buoyancy force
d) What does the above experiment show about measurement?
• Weight of objects in different media

13
52. a) Give any two reasons why it is important to keep the body clean.
• To control the spread of germs
• To prevent skin diseases
• To remove dirt from the body
• Prevents breeding of diseases vectors
• To prevent a body smell
• To prevent tooth decay
• To help one to be healthy

b) State any two dangers of failing to keep the body clean.

• It can lead to the spread of skin diseases
• It can lead to teeth decay
• Easy spread of diarrhoeal diseases
• It can lead to body smell
• There is easy spread of germs
53. a) Which method of making alcohol produces the highest alcohol
concentration?
• Distillation (Reject; distilling)
b) State any two ways in a medical worker uses alcohol.
• For cleaning wounds
• For sterilizing medical instruments
• For cleaning areas on the skin where an injection is going
to be taken
(Reject; For making surgical spirit / for mixing injectable drugs)
c) In which way does alcohol affect the digestive system?
• It causes peptic ulcers/ stomach ulcers/ gastric ulcers
• (reject; cause liver cirrhosis)

54. a) State the importance of each of the following items when giving
first aid to a casualty;
i) gauze
• used to absorb fluids from wounds
• used for dressing wounds
ii) razorblade
• used for cutting torn skin
• used for cutting bandages, gauze and plaster

14
 b) Give any two qualities of a good First Aider.
• Should be kind • Should be observant
• Should be clean • Should be courageous
• Should be trained • Should be gentle
• Should be confident
• Should be tacticful/ skillful
• Should be knowledgeable
• Should be fast at taking actions
• Should be having common sense
• Should be sympathetic and empathetic
• Should be quick in decision making

55. The diagram below shows a simple machine. Study and use it to
answer the questions that follow.

a) To which group of simple machines does the above machine belong?

• Wheels and axles (Reject steering wheel)
b) Name the parts marked R and Ton the simple machine above;
i) R -wheel
ii) T -axle
c) How does the above simple machine simplify work?
• By changing the direction of force while driving
• (reject; it is used for controlling direction of a car while driving)

ADVI CE TO TEACHERS OF I NTEGRATED SCI ENCE

• Identify learners’ challenges after marking this item and address them
while making corrections.
• Make a comprehensive correction per question to enable learners
discover more new concepts which they seem to have forgotten
INT. SCI. SKEB WISHES YOU SUCCESS IN PLE 2022

15
©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

©2022-SUREKEY EXAMINATIONS BOARD (SKEB) ‘Don’t Speak for Quality, Let Quality Speak for Itself’’ Always ready to change the dynamics in education. Don’t miss out please.

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