Ten-Year Series · PSLE 2022
PSLE Science 2022 Answers
The answer key for the PSLE Science 2022 paper (Paper 1): 40 questions, 28 with a free final answer, plus the topic and marks for each. Find the question number in your TYS book and tick it off.
We publish answers only. The questions and diagrams stay in your printed Ten-Year Series (TYS) book, so keep it open beside this page (“see the diagram in your book”).
MCQ answers are option numbers, e.g. (3).
Paper 1
40 questions · 28 free final answers · 100 marks listed
| Q | Answer | Topic / section | Marks |
|---|---|---|---|
| Q1 | (2) | Diversity · Classifying living thingsMCQ | 2 |
| Q2 | (3) | Interactions · Food chainsMCQ | 2 |
| Q3 | (4) | Diversity · Classifying living thingsMCQ | 2 |
| Q4 | (4) | Cycles · Life cycle of a butterflyMCQ | 2 |
| Q5 | (1) | Systems · Plant vs animal cellsMCQ | 2 |
| Q6 | (4) | Systems · Heart and circulationMCQ | 2 |
| Q7 | (2) | Systems · Plant vs animal cellsMCQ | 2 |
| Q8 | (3) | Interactions · Living things and environmentMCQ | 2 |
| Q9 | (4) | Cycles · Life cycle of a plantMCQ | 2 |
| Q10 | (3) | Cycles · Plant reproductionMCQ | 2 |
| Q11 | (3) | Interactions · AdaptationsMCQ | 2 |
| Q12 | (1) | Cycles · Life cycle of a plantMCQ | 2 |
| Q13 | (4) | Energy · Forms of energyMCQ | 2 |
| Q14 | (3) | Systems · Human respiratory systemMCQ | 2 |
| Q15 | (1) | Diversity · MaterialsMCQ | 2 |
| Q16 | (4) | Interactions · ForcesMCQ | 2 |
| Q17 | (3) | Energy · Heat and temperatureMCQ | 2 |
| Q18 | (2) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q19 | (2) | Interactions · ForcesMCQ | 2 |
| Q20 | (4) | Interactions · MagnetsMCQ | 2 |
| Q21 | (4) | Diversity · MaterialsMCQ | 2 |
| Q22 | (4) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q23 | (3) | Interactions · MagnetsMCQ | 2 |
| Q24 | (1) | Cycles · Changes of stateMCQ | 2 |
| Q25 | (2) | Energy · Heat conductors vs insulatorsMCQ | 2 |
| Q26 | (1) | Cycles · Changes of stateMCQ | 2 |
| Q27 | (3) | Interactions · ForcesMCQ | 2 |
| Q28 | (3) | Energy · Light and shadowMCQ | 2 |
| Q29 | Model answer in worked solution | Interactions · Environmental pollutionOpen-ended | 3 |
| Q30 | Model answer in worked solution | Systems · Human digestive systemOpen-ended | 4 |
| Q31 | Model answer in worked solution | Diversity · Classifying living thingsOpen-ended | 4 |
| Q32 | Model answer in worked solution | Interactions · Living things and environmentOpen-ended | 4 |
| Q33 | Model answer in worked solution | Systems · Plant transport xylem & phloemOpen-ended | 3 |
| Q34 | Model answer in worked solution | Energy · Forms of energyOpen-ended | 4 |
| Q35 | Model answer in worked solution | Interactions · ForcesOpen-ended | 4 |
| Q36 | Model answer in worked solution | Interactions · MagnetsOpen-ended | 5 |
| Q37 | Model answer in worked solution | Energy · Forms of energyOpen-ended | 5 |
| Q38 | Model answer in worked solution | Cycles · Three states of matterOpen-ended | 2 |
| Q39 | Model answer in worked solution | Systems · Series vs parallel circuitsOpen-ended | 4 |
| Q40 | Model answer in worked solution | Energy · Heat conductors vs insulatorsOpen-ended | 2 |
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Step-by-step worked solutions for every Science question, written the way PSLE markers award method marks, plus model answers for open-ended questions. We are adding them newest years first (2025 back to 2021), checked against the answer key on this page.
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