P3 Science SA1 2025 — Maha Bodhi

P3 Science 2025 SA1 12 questions 30 marks

Source: Maha Bodhi, 2025

This P3 Science SA1 paper from Maha Bodhi (2025) contains 12 questions worth 30 marks. Use it as a study reference for Science topics typically tested at P3 level in Singapore schools.

Q1 MCQ 2 marks 🖼 Visual
Jack touched a snail and observed that the snail went back into its shell as shown below. Based on his observation above, which characteristics of living things did the snail show?
Q2 MCQ 2 marks
Which statement about all plants is true?
Q3 MCQ 2 marks
Molly made the following statements about an animal. • It has scales. • It has four legs. • It lays eggs on land. • It can swim well in the water. Based on her observations above, which animal group does the animal belong to?
Q4 MCQ 2 marks 🖼 Visual
Study the animals below. Which statement about the animals shown above is false?
Q5 MCQ 2 marks 🖼 Visual
Study the diagram below. Which group of living things does the mushroom belong to?
Q6 MCQ 2 marks 🖼 Visual
Study the diagrams of plants A and B. Which statement is true about plants A and B above?
Q7 MCQ 2 marks 🖼 Visual
Study the flowchart below. Based on the flowchart, which animals above, E, F, G or H, represents an ant?
Q8 MCQ 2 marks 🖼 Visual
Study the table below. A tick (✓) shows that the living thing has the characteristic. Based on the table above, which living thing S, T, U or W, best represents bacteria?
Q9 Open-ended 4 marks 🖼 Visual
Mary watered her plant every day and made sure that it had enough sunlight. She measured the height of her plant over four weeks. She recorded her findings in the graph below. (a)(i) State the change in the height of the plant over the four weeks. [1] (a)(ii) State the characteristics of living things shown by the plant based on her observation above. [1] (b) Mary was away on a holiday. After two weeks, she found that the plant has wilted as shown below. Explain why the plant wilted after two weeks. [2]
Q10 Open-ended 2 marks 🖼 Visual
Study the flowchart below. (a) Based on the flowchart above, state a reason why living thing M is a plant. [1] (b) "Living thing K is a flowering plant." Explain why the statement above is false. [1]
Q11 Open-ended 4 marks 🖼 Visual
Study the classification chart below. (a) Based on the chart above, which group of animals best represents Z? [1] (b) Based on the chart above, state a difference between animal X and Z. [1] Study the animal below. (c) Based on the chart above, which animals, X, Y or Z best represents animal N above? Explain your answer. [2]
Q12 Structured 4 marks 🖼 Visual
Two similar bread slices, J and K were sprinkled with the same amount of water. Both breads were then left in different places as shown in the diagrams below for one week. After a week, some grey living thing P grew on bread K as shown below. (a) Identify living thing P. [1] (b) Why was water added to breads J and K? [1] (c) Place a tick (✓) in the table below to show the place of the experiment with a higher temperature. [1] (d) Based on the results, state how the temperature affects the growth of living thing P. [1]