This P3 Science CA2 paper from Methodist Girls (2025) contains 13 questions worth 30 marks. Use it as a study reference for Science topics typically tested at P3 level in Singapore schools.
Q1MCQ2 marks🖼 Visual
Four pupils shared what they had learnt in school about life cycles.
Animals do not go through the same life
cycle as their parents.
Ming Lee
All living things go through a life
cycle.
Mala
Collin
Different living things go through the
same life cycle.
A life cycle is a repeated pattern of
change.
Which pupils shared the correct statements?
Q2MCQ2 marks🖼 Visual
The diagram shows the stages of growth of a bean plant.
The seed leaves provide food for the seed to grow at stages ____.
Q3MCQ2 marks🖼 Visual
Joshua carried out an experiment to find out if seeds need water to grow into seedlings. He put some seeds in the pots and watered them daily.
Which pots should Joshua use to find out if water is necessary for the seeds to grow into seedlings?
Q4MCQ2 marks
Which of the following statements are true?
A Not all plants grow from seeds.
B The roots grow before the shoot.
C A young plant with leaves can make food.
D Plants that grow from seeds have four stages in their life cycles.
Q5MCQ2 marks🖼 Visual
Alison was growing some green bean seeds. Which of the following shows what she would first observe?
Q6MCQ2 marks🖼 Visual
Study the table below.
Which of the following correctly states the heading for A and B?
Q7MCQ2 marks🖼 Visual
Ravi, Benny and Susan discussed about the life cycle of a mosquito and a frog shown below.
After their discussions, they recorded the following statements.
Ravi: The larva of a mosquito goes through moulting but not the young of a frog.
Benny: The young of a frog looks like its adult but not the mosquito.
Susan: The young of the frog lives in water and on land but the larva of the mosquito lives in water only.
Whose statements are not correct?
Q8MCQ2 marks🖼 Visual
Study the table below.
Which animal W, X, Y or Z is most likely a beetle?
Q9MCQ2 marks🖼 Visual
The diagram below shows three animals.
Which of the following statements about the life cycles of these animals is correct?
Q10MCQ2 marks🖼 Visual
The graph below shows the number of days in each stage of the life cycle of Insect X.
Based on the graph above, which of the statements below are true?
A The egg takes 6 days to hatch.
B The young of Insect X looks like the adult.
C Insect X cannot fly in the adult stage.
D Insect X does not need to eat for 21 days after its larva stage.
Q11Structured3 marks
Jason wanted to investigate how temperature would affect the growth of seeds. He had five set-ups. Each set-up consists of five seeds placed on some moist cotton wool as shown in the diagram below. He then put each set-up in a different location.
(a) In which two set-ups would the seeds most likely grow?
Set-ups ____ and ____
(b) Explain your answer in (a).
(c) Based on the diagram, will the seeds grow? Give a reason for your answer.
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The diagram below shows the life cycle of a butterfly.
(a) Why does the butterfly lay eggs on leaves?
(b) State two differences between the larva and pupa stages in the life cycle of a butterfly.
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The diagram below shows an adult cockroach and its nymph.
(a) State one difference between the adult cockroach and its nymph.
(Do not mention colour, size or length.)
(b) Draw and label the life cycle of a cockroach in the box below.
(c) State a similarity between the life cycles of the cockroach and the grasshopper.
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