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WorksheetsP5 Science Revision 108
Total questions: 108
Worksheet time: 2hrs 50mins
The picture shows a female white tiger and her cub at the Singapore Zoo.
Why does the cub look like his mother?
Genetic information is passed to him from his mother’s _______________________.
milk
egg
blood
ovule
Xiao Mi noticed that one of her flowering plants did not bear fruit. What could be the possible reasons?
A : The flowers have no seeds.
B : The flowers have only male parts.
C : The flowers have only female parts.
D : The flowers have not been pollinated.
A and B only
A and C only
B and D only
A, B, C and D
The diagram shows the cross-section of 2 flowers, X and Y.
What process do the arrows in the diagram represent?
Pollination
Fertilisation
Germination
Seed dispersal
Study the following statements that describe the reproduction cycle of a flowering plant.
V : Fertilisation takes place.
W : Pollen grains are released.
X : Stigma receives the pollen grains.
Y : Pollen tube grows towards the ovules.
Z : Fruits with seeds are developed and dispersed.
Which of the following shows the correct sequencing of the stages in the reproduction cycle of a flowering plant?
Z → W → X → Y → V
X → Y → V → W → Z
W → X → Y → V → Z
V → Z → W → X → Y
During Science lesson, Mr Tan got the pupils to carry out an experiment. The pupils were required to find out how Balsam plants grow under certain conditions. The steps on how to carry out the experiment were as below.
Step 1 : Fill 2 identical pots with similar 500g of soil.
Step 2 : Place 4 similar seeds in the first pot.
Step 3 : Place 15 similar seeds in the second pot.
Step 4 : Place both pots in the garden.
Step 5 : Water both pots daily with the same amount of water.
What was the aim of the above experiment?
The pupils were trying to find out if ________________________.
plants grow from seeds
plants grow well in the soil only
overcrowding can affect plant growth
fertilisers are compulsory for plant growth
After a heavy rain, Zul noticed that there were puddles of water on the Parade Square in the school.
After a few hours, there were still some puddles of water on the Parade Square. What was the likely cause of this observation?
A : The rate of evaporation was high.
B : The surrounding temperature was low.
C : The humidity of the surrounding air was high.
D : The exposed surface area of the puddles was large.
A and B only
B and C only
C and D only
B, C and D only
Uncle Sam was preparing a mug of tea. He poured the hot tea from one mug to another at a distance as shown in the diagram.
How does Uncle Sam’s action help to cool the tea faster?
The hot tea from Mug A ________________________________.
gains heat from the mug itself
loses heat to Mug B from a height
loses heat to the cool surrounding air
gains heat from the cool surrounding air
Study the organism shown.
W
X
Y
Z
Study the set-ups.
The set-ups are placed on a table in a room at 28°C.
Which of the set-ups, W, X, Y and Z, correctly show(s) the formation of water droplets?
X only
W and Z only
W, Y and Z only
W, X and Z only
Study the two diagrams.
How are the clouds in the sky and the mist formed around the spout of a kettle of boiling water similar?
A : Both are made up of water vapour.
B : Both are made up of water droplets.
C : Both are formed by evaporation of water.
D : Both are caused by heat lost to the surrounding air.
A and C only
A and D only
B and C only
B and D only
The diagram shows an organism. It is made of only one cell. It lives in ponds and streams. It has features of both plant and animal cells.
Based on the diagram, which characteristic suggests that it is an animal cell?
It has a membrane to protect itself.
It has chloroplast to provide food for itself.
It has no cell wall to give the organism a fixed shape.
It has cytoplasm to allow the movement of materials going in and out of the cell.
Which one of the following graphs shows the level of carbon dioxide in a jungle from 6 am to 12 midnight?
1
2
3
4
Mr Tang intended to find out if a plant with a broken stem can continue to grow. He placed the plant with a broken stem in a well-lit place and watered it daily.
He observed that the plant had withered and died after a week. This was because _________________________________.
oxygen could not be taken in by the leaves
sunlight could not be taken in by the leaves
water could not be transported to the leaves
carbon dioxide could not be taken in by the leaves
Morris set up the circuit as shown using identical bulbs, A, B, C, D and E.
Next, he removed bulb C from the circuit and replaced with object Y. All the remaining bulbs lit up dimmer than before.
What could object Y be?
a coin
a battery
a switch
a pencil lead
The diagrams show 4 circuits with different arrangements of identical batteries and identical bulbs. The bulbs in all 4 circuits light up.
Which one of the following shows the brightness of the bulbs, W, X, Y and Z, starting with the dimmest bulb to the brightest bulb?
Z, W, X, Y
Y, X, W, Z
X, Y, Z, W
W, Z, Y, X
Z only
W and Y only
W and Z only
W, Y and Z
4 Minions, Stuart, Kevin, Bob and Carl, expressed their knowledge on what they had learnt on series and parallel circuits as shown in the diagrams below. All insisted their statement was correct.
Stuart: When more bulbs are added in a series circuit, the brightness of the bulbs increases.
Kevin: When more bulbs are added in a series circuit,
the brightness of the bulbs decreases.
Bob: When more bulbs are added in a parallel circuit, the brightness of the bulbs increases.
Carl: When more bulbs are added in a parallel circuit, the brightness of the bulbs decreases.
Which of the statement(s) made by the above Minions is/are correct?
Bob only
Kevin only
Bob and Kevin only
Stuart and Carl only
Study the 4 circuit diagrams.
<Triangle> represents a conductor of electricity while <square> represents a non-conductor of electricity.
Which circuits will have at least 1 bulb lit up?
Circuit W, X and Y only
Circuit W, Y and Z only
Circuit X, Y and Z only
Circuit W, X, Y and Z
The diagram shows an electric circuit with a circuit card that can be connected to it.
Jade tested the circuit card and recorded the results below.
A and B : Lights up
A and C : Lights up
A and D : Does not light up
B and C : Lights up
B and D : Does not light up
Which one of the following will reflect the above results?
1
2
3
4
Which of the following statements best explains Mike’s observations?
Some metals can attract other metals. This is because they are...
Magnetic
Conductors
Ductile
Malleable
Some metals can conduct electricity. This is because they are...
Magnetic
Conductors
Ductile
Malleable
What type of cell is this?
Animal cell
Plant cell
Green cell
Human cell
What type of cell is this?
Animal cell
Plant cell
Green cell
Human cell
What is the line around the cell?
Cytoplasm
Mitochondria
Nucleus
Cell Membrane
What are the 6 green dots?
Water
Chlorophyll
Glucose
Chloroplasts
What do plant cells have that animal cells don’t?
Cell membrane
Cell Wall
Nucleus
Chloroplasts
When objects are classified into smaller groups, ____________ .
the smaller groups always have the same number of objects
the members of each group share a similar characteristic
the same object can appear in more than one group
there can only be two smaller groups
Which of the following ways can classification be represented?
Graphs and tables
Tables and diagrams
Diagrams and graphs
Diagrams, tables and graphs
Which of the following is not a characteristic of a living thing?
A living thing can respond to changes.
A living thing can reproduce.
A living thing needs air, water and food.
A living thing can make sounds
After some time, a small seedling become a large plant. This shows that __________________ .
living things can reproduce
living things can move
living things can respond to changes
living things can grow
A robot is a non-living thing because ______________ .
it can move
it can respond to changes
it cannot reproduce
it cannot fly
Which of the following are not plants.
Moss
Fern
Mushroom
Celery
Which of the following are parts of a non-flowering plant?
A: roots
b: stem
c: leaves
d: flowers
A and B only
B and C only
A, B and C only
B, C and D only
One difference between a fern and a durian tree is ____________ .
the durian tree has seeds but the fern has spores
the durian tree has leaves but the fern does not
the durian tree has large flowers but the fern has small flowers
the durian tree has large fruits but the fern has small fruits
Animal X has feathers. It is most likely to belong in the group _____________ .
mammals
fish
reptiles
birds
John discovered an Animal Y that has 3 pairs of legs. He concluded that it should belong to the _____________ group.
reptiles
insects
mammals
fish
Kelly observed Animal Z for a while and concluded that it was a mammal. Which of the following observations did she make in order to reach this conclusion?
Animal Z can fly.
Animal Z has 4 legs.
Animal Z has hair.
Animal Z can breathe in water.
Here are some observations that Li Ning made about Animal W:
- it can lay eggs
- it cannot fly
- it has dry scales
Which group does Animal W belong to?
mammals
amphibians
insects
reptiles
Which of the following are not fungi?
Bird's nest fern
Mushroom
Bread mould
Yeast
Which of the following statements about fungi and bacteria are FALSE?
A: Fungi and bacteria comes in different shapes and sizes.
B: Some fungi can be seen without using a microscope.
C: All bacteria are harmful to living things.
D: Both fungi and bacteria feed on living thing, dead or alive.
B only
C only
A, B and D only
A, C and D only
Which of the following characteristics is the most important when choosing the material to make a raincoat?
Waterproof
Floats in water
Strength
Flexibility
Which of the following characteristics is the most important when choosing the material for a car windscreen?
Transparency
Flexibility
Strength
Floats in water
Which of the following materials cannot be used to make a temporary magnet?
Nickel
Iron
Copper
Steel
How can you decrease the magnetic strength of an electromagnet?
Add more batteries.
Add more coils.
Remove some batteries.
Change the metal rod into a copper rod.
If Aaron is trying to test an unknown object K with a magnet, what should he observe to conclude that K is a magnet?
The magnet is attracted to K.
K is attracted to the magnet.
Nothing happens.
The magnet is repelled by K
Identify the type of magnet shown in the picture below.
U-shaped magnet
Bar magnet
Horseshoe magnet
Ring magnet
Mingfen hung a wet towel in the bathroom.
Which of the following ways would help to dry the towel faster?
A: fold the towel in half
B: open the door of the bathroom
C: use a hairdryer to blow the towel
A and B only
A and C only
B and C only
A, B and C
Which of the following is not a matter?
air
soil
light
water
Butterflies visit flowers. The butterflies benefit directly by _________.
dispersing the seeds
pollinating the flowers
feeding on the nectar
laying eggs on the flower
What is generally common among insects and birds?
They have three body parts
They reproduce by laying eggs
Their young look like the adults
They have the same type of body covering
A bicycle tyre is fully inflated by Ben is still able to pump more air into it. Why is this possible?
Air has mass
Air occupies space
Air does not have a definite shape
Air does not have a definite volume
Ryan placed a cup of hot water on a wooden table. What could he do to cool the water faster?
Wrap the cup with a cloth
Place the cup in a plastic bag
Place the cup on a metal plate
Cover the top of the cup with a wooden lid
Jing Xuan blew air into a balloon and tied it tightly.
After leaving the balloon in the refrigerator for a few hours, she observed that the balloon was smaller than before.
Which one of the following is correct?
Heat flowed from the ____________________________________.
refrigerator to the air inside the balloon
refrigerator to the material of the balloon
material of the balloon to the air inside the balloon
air inside the balloon to the material of the balloon
Jovan has three bags made of different materials. Which one of the following test is the best to measure the strength of the bags?
Pull each bag till it stretches.
Weigh each bag using balance.
Pour water into each bag till it tears.
Pull each bag using a spring balance till it tears.
Which one of the following is not a source of light?
Star
Mirror
Firefly
Lightning
The water cycle on Earth can take place repeatedly because water _______.
A: melts at 0oC and boils at 100oC
B: has volume and is not compressible
C: can change from one state to another
D: is important for the survival of living things
D only
C only
A, B and C only
A, B, C and D
The container as shown in the diagram below contains some water.
What will happen to the water level and volume of water when the stone is placed into the container?
(1)
(2)
(3)
(4)
Mary puts a balsam plant into a beaker of water in which some blue ink has been added. A few hours later, she observes that the flowers turn from white to blue.
What does this experiment show?
The stem joins the roots to the rest of the plant.
The stem carries water form the roots to the rest of the plant.
Water is absorbed by the plant only through its roots.
Water is lost to the surroundings from every part of the plant.
The diagram below shows a plant growing in the garden.
Which of the following statements is/are correct?
A -- This plant has roots.
B -- This plant has weak stem
C -- This plant is a flowering plant.
B only
A and B only
A and C only
A, B and C
The diagram below shows the flower of a plant.
In which parts of the flower are pollen grains and the ovules produced?
Pollen Grain - A
Ovules - C
Pollen Grain - A
Ovules - D
Pollen Grain - B
Ovules - C
Pollen Grain - B
Ovules - D
Which part of the body absorbs most of the digested good?
gullet
stomach
small intestine
large intestine
The arrows, A, B, C and D, represent blood vessels carrying blood to and from the lungs, heart and other parts of our body.
Which two blood vessels carry blood with less oxygen?
A and B
A and C
B and C
C and D
The diagram below shows the human digestive system.
In which part, A, B, C or D, is food digested and passed into the blood vessel?
A
B
C
D
Which of the following is a source of energy for plants?
sun
water
oxygen
carbon dioxide
The following diagram shows parts of a flower.
Which part, A, B, C or D, will develop into a fruit?
A
B
C
D
Rahman wanted to test if butterflies are attracted to sugar solution. He used flowers made of silk in his experiment and sprayed some of them with 5 cm3 of sugar solution.
Which set-up should he use?
The heart rate of a person who is resting is about 70 beats in one minute.
The graph shows Jeya's heart rate over a few hours.
Which one of the following shows correctly Jeya's activity and her heart rate?
A - Sitting
B - Running
C - Sleeping
D - Walking
A - Sleeping
B - Running
C - Walking
D - Sleeping
A - Sleeping
B - Walking
C - Running
D - Sitting
A - Walking
B - Sitting
C - Running
D - Sleeping
The diagram shows two green plants, X and Y, growing in a garden.
Which one of the following statements about both plants, X and Y, is NOT correct?
They have roots.
They reproduce by spores.
They make their own food.
They need support to grow.
Which one of the following shows the correct sequence of reproduction of a flowering plant in one cycle?
Plants take in water from their roots.
Where is the water transported to?
A -- flowers
B -- fruits
C -- leaves
D -- stems
C only
A and B only
B, C and D only
A, B, C and D
Which of the following statements best describes matter?
It can be seen.
It conducts electricity.
It has a fixed shape and size.
It has weight and volume.
The diagram shows a pump connected to a glass jar. The capacity of the jar is 400 cm3. The jar contains 50 cm3 of water.
When the piston is pushed completely in, 30 cm3 of water is forced into the jar. What is the volume of air in the jar?
30 cm3
350 cm3
380 cm3
430 cm3
Study the circuit diagram.
Which bulb, if faulty, would allow only one other bulb to light up the circuit?
W
X
Y
Z
The experiment show in in the diagram is carried out in a dark room.
Sheets A, B, C and D are arranged in a straight line. When the torch is switched on, a bright triangular patch of light is seen on Sheet C only.
Which one of the following correctly describes the properties of the materials that sheets A, B, C and D are made of?
Allows light to pass through -- A and B
Does not allow light to pass through -- D
Not possible to tell -- C
Allows light to pass through -- A and D
Does not allow light to pass through -- C
Not possible to tell -- B
Allows light to pass through -- B
Does not allow light to pass through -- C
Not possible to tell -- A and D
Allows light to pass through -- B
Does not allow light to pass through -- A and C
Not possible to tell -- D
Two syringes, P and Q, contain substances X and Y respectively.
Plunger in syringe P could not be pushed in while plunger Q could be pushed in slightly as shown in the diagram.
Which of the following substances are most likely to be X and Y?
X -- air
Y -- water
X -- carbon dioxide
Y -- oxygen
X -- oil
Y -- air
X -- water
Y -- oil
The diagram shows an experiment using three similar rods of different materials.
Each rod has the same amount of wax coated at one end. The metal container is filled with hot water.
The time taken for each piece of wax to melt is taken.
The aim of this experiment is _______________________________.
to compare how well each rod conducts heat
to show that water is a bad conductor of heat
to show that wax will melt at high temperature
to compare how well the wax sticks to each rod
A circuit is set up using 2 bulbs, L1 and L2, and three switches S1, S2 and S3.
Which of the following is correct?
Small holes were pierced in two cans, P and Q, as shown in the diagram.
From which can would milk flow out faster, and why?
Can P, because air pushes the milk out.
Can P, because milk flows out from one hole only.
Can Q, because air enters through both holes and milk flows out from both holes.
Can Q, because air enters through one hole and milk flows out from the other hole.
Devi poured 200 cm3 of water into each of four containers which were made of the same material. The containers were left in the open.
Which of the containers would have the least amount of water left after a few hours?
The diagram shows five lamps connected to two batteries.
When one of the lamps is not working, only two lamps remain lighted.
Which lamp is not working?
A
B
C
D
The following shows a classication table.
What does X represent?
iron nail
salt water
copper sheet
wooden block
The table shows the state of four substances, A, B, C and D, at different temperatures.
Which of the following statements is correct?
Substance A has the highest freezing point.
The freezing point of Substance B is 20°C.
The boiling point of Substance C is 60°C.
Substance D has the lowest boiling point.
Devi felt very cold in an air-conditioned room.
Which one of the following reasons best explains why?
Her body lost heat to the surroundings.
Her body gained coldness from the surroundings.
The surroundings lost heat to her body.
The surroundings gained coldness from her body.
The diagram shows the cell of a green plant.
What is the main function of part P?
It gives the cell a fixed shape.
It controls activities in the cell.
It gives the cell a green colour.
It controls substances entering the cell.
The diagram shows the fruit of some plants.
How is each fruit, P and Q, dispersed?
P - wind
Q - animals
P - animals
Q - splitting action
P - wind
Q - splitting action
P - animals
Q - animals
Which one of the following diagrams shows the order of stages and processes in the life cycle of a flowering plant?
Some water containing red dye was poured in the soil of a potted plant. After a few hours, some parts of the flowers and leaves turned red.
Which of the following statements are correct for the potted plant?
A -- Water is taken in by the roots.
B -- Water is transported to the leaves.
C -- Water is transported to the flowers.
D -- Water is carried through the stem.
A and D only
B and C only
A, B and C only
A, B, C and D
The diagram shows a green plant.
How does X obtain its food?
The food is made by X itself.
The food is transported from Y.
The food is absorbed from the soil.
The food is transporting from the leaves.
Raja wanted to investigate how the amount of light affects the growth of a type of plant.
The diagram shows each of his set-ups in a clear plastic tank.
Which one of the following could be used as a control for his experiment?
The diagram shows the digestive system of a human body.
Where does digestion take place?
A and F
B and F
C, D and E
A, C and E
An outer ring of a stem was removed from a plant, as shown in the diagram. As a result, the tubes carrying food and water were removed.
It was observed Z grew bigger after one week. Which one of the following statements best explains the observation?
Food is made by Z itself.
Food is transported from X to Z.
Food is transported from Y to Z.
Food is absorbed by Z from the soil.
Study the diagram.
Which one of the following correctly identifies A, B, X and Y?
The lungs and the heart are two organs in the human body. Which one of the following statements on the functions of the lungs and heart is true?
The lungs remove carbon dioxide from the body.
The heart removes carbon dioxide from the lungs.
The lungs transport oxygen produced by the heart.
The heart takes in oxygen from the surroundings directly into the body.
Some single-cell organisms were placed in a beaker of water and left in the open for two weeks. The diagram shows the top view of the organisms at the start and end of the experiment.
It was observed that the number and size of organisms increased after two weeks. Which process(es) could have caused the changes?
germination only
reproduction only
germination and growth
growth and reproduction
The diagrams below show the development of structure Y in a plant.
Which of the following statement(s) about Y is/are correct?
A -- It stores food.
B -- It absorbs water.
C -- It can reproduce.
A only.
A and C only.
B and C only.
A, B and C
A and B are fruits from different plants.
How are fruits, A and B, dispersed?
A - animal
B - wind
A - animal
B - animal
A - wind
B - animal
A - wind
B - wind
The diagram shows three glass tanks, P, Q and R, each containing different organisms and with the same amount of carbon dioxide in each.
The three glass tanks were sealed and kept in a well-lit room for six hours.
In which of the tanks would there be an increase in carbon dioxide afer six hours?
Q only
R only
P and Q only
P and R only
