P3 Science SA1 2025 — St Hildas

P3 Science 2025 SA1 13 questions 30 marks

Source: St Hildas, 2025

This P3 Science SA1 paper from St Hildas (2025) covers animals and life cycles, classification, plants, the human body and heat and temperature across 13 questions worth 30 marks. Practise Science the way it's tested at P3 level in Singapore, with step-by-step answers on LearnBuddy.

Q1 MCQ 2 marks 🖼 Visual
Study the classification table below. Which one of the following best represents X?
Q2 MCQ 2 marks 🖼 Visual
The diagram below shows a plant before and after three months. Based on the diagram, which characteristic shows that the plant is a living thing?
Q3 MCQ 2 marks 🖼 Visual
The diagram below shows two animals. Which of the following best explains why the two animals are classified in the same group?
Q4 MCQ 2 marks 🖼 Visual
Which of the following is different in the way it reproduces?
Q5 MCQ 2 marks
What is the similarity between bacteria and fungi?
Q6 MCQ 2 marks 🖼 Visual
Eric carried out an experiment by placing a similar snail into each container, X and Y. After two weeks, he observed that the snail in container X died. Based on the experiment, what can Eric conclude?
Q7 MCQ 2 marks 🖼 Visual
Study the flowchart below carefully. Which letter P, Q, R or S represents a snake?
Q8 MCQ 2 marks 🖼 Visual
Ali had three similar buns. He toasted bun X. Then, he added a few drops of water on bun Y. He did not do anything to bun Z. He sealed the buns in separate bags and left them under his table for a week. Which of the following shows a possible observation of the amount of mould growing on each bun after a week?
Q9 MCQ 2 marks 🖼 Visual
Four living things, A, B, C and D, are grouped according to the chart below. Based on the chart above, which of the following statements is incorrect?
Q10 MCQ 2 marks 🖼 Visual
The table below provides information about four different living things, W, X, Y and Z. Which one of the living things, W, X, Y or Z best represents the organism shown below?
Q11 MCQ 2 marks 🖼 Visual
Study animal Q below. Which of the following characteristics show that animal Q is not an insect? A the number of legs B the number of wings C the number of body parts
Q12 Structured 4 marks 🖼 Visual
Leela observed three animals X, Y and Z. She recorded their characteristics in the table as shown. A tick (✓) indicates that the animal has that characteristic. (a) Based on the characteristics shown in the table above, state one difference and one similarity between animals X and Z. (i) Difference: [1] (ii) Similarity: [1] (b) Based on the characteristics shown in the table above, circle the group that animal Y belongs to. Give a reason for your answer. (i) Animal group: ( Birds / Mammals / Fish / Reptiles / Amphibians ) [1] (ii) Reason: [1]
Q13 Structured 4 marks 🖼 Visual
Four students talked about what they had learnt in science. Student A: The tortoise is an amphibian which has moist skin. Student B: Some bacteria are harmful while others are useful to us. Student C: Most reptiles reproduce by laying eggs. Student D: Bread mould breaks down the bread into simpler substances and absorb them as food. (a) Which student, A, B, C or D, is wrong? Tick (✓) your answer in the box above. [1] (b) Correct and rewrite the statement identified in (a). [1] Nora conducted an experiment by placing two similar oranges in boxes of the same type. She placed both boxes G and H at a warm place as shown below. Four days later, Nora observed fungi growing on one of the oranges. (c) State the aim of her experiment. [1] To find out if ____ (d) To conduct a fair experiment, tick (✓) the correct box(es) for the variables that must be changed, measured or kept constant. [1] Variables: Presence of fungi; Presence of water; Size of orange; Temperature of surrounding.

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