Ten-Year Series · PSLE 2015
PSLE Science 2015 Answers
The answer key for the PSLE Science 2015 paper (Paper 1): 44 questions, 30 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
44 questions · 30 free final answers · 100 marks listed
| Q | Answer | Topic / section | Marks |
|---|---|---|---|
| Q1 | (3) | Interactions · Food chainsMCQ | 2 |
| Q2 | (1) | Cycles · Plant reproductionMCQ | 2 |
| Q3 | (2) | Diversity · Classifying living thingsMCQ | 2 |
| Q4 | (2) | Systems · Plant vs animal cellsMCQ | 2 |
| Q5 | (3) | Systems · Plant transport xylem & phloemMCQ | 2 |
| Q6 | (3) | Systems · Heart and circulationMCQ | 2 |
| Q7 | (2) | Interactions · Food chainsMCQ | 2 |
| Q8 | (4) | Cycles · Plant reproductionMCQ | 2 |
| Q9 | (2) | Interactions · Food chainsMCQ | 2 |
| Q10 | (3) | Interactions · HabitatsMCQ | 2 |
| Q11 | (4) | Energy · Forms of energyMCQ | 2 |
| Q12 | (1) | Cycles · Life cycle of a plantMCQ | 2 |
| Q13 | (3) | Energy · Forms of energyMCQ | 2 |
| Q14 | (1) | Cycles · Plant reproductionMCQ | 2 |
| Q15 | (4) | Interactions · Environmental pollutionMCQ | 2 |
| Q16 | (1) | Interactions · ForcesMCQ | 2 |
| Q17 | (2) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q18 | (2) | Diversity · MatterMCQ | 2 |
| Q19 | (4) | Interactions · ForcesMCQ | 2 |
| Q20 | (2) | Energy · Forms of energyMCQ | 2 |
| Q21 | (3) | Cycles · Water cycleMCQ | 2 |
| Q22 | (4) | Cycles · Changes of stateMCQ | 2 |
| Q23 | (1) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q24 | (3) | Interactions · MagnetsMCQ | 2 |
| Q25 | (4) | Diversity · MaterialsMCQ | 2 |
| Q26 | (4) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q27 | (2) | Interactions · MagnetsMCQ | 2 |
| Q28 | (3) | Interactions · ForcesMCQ | 2 |
| Q29 | (1) | Energy · Heat and temperatureMCQ | 2 |
| Q30 | (1) | Energy · Light and shadowMCQ | 2 |
| Q31 | Model answer in worked solution | Systems · Human respiratory systemOpen-ended | 2 |
| Q32 | Model answer in worked solution | Cycles · Life cycle of a plantOpen-ended | 3 |
| Q33 | Model answer in worked solution | Cycles · Plant reproductionOpen-ended | 3 |
| Q34 | Model answer in worked solution | Systems · Plant transport xylem & phloemOpen-ended | 3 |
| Q35 | Model answer in worked solution | Interactions · AdaptationsOpen-ended | 3 |
| Q36 | Model answer in worked solution | Energy · Forms of energyOpen-ended | 3 |
| Q37 | Model answer in worked solution | Energy · Heat conductors vs insulatorsOpen-ended | 3 |
| Q38 | Model answer in worked solution | Cycles · Water cycleOpen-ended | 2 |
| Q39 | Model answer in worked solution | Interactions · MagnetsOpen-ended | 3 |
| Q40 | Model answer in worked solution | Diversity · MaterialsOpen-ended | 2 |
| Q41 | Model answer in worked solution | Energy · Forms of energyOpen-ended | 2 |
| Q42 | Model answer in worked solution | Energy · Light and shadowOpen-ended | 4 |
| Q43 | Model answer in worked solution | Diversity · MaterialsOpen-ended | 3 |
| Q44 | Model answer in worked solution | Cycles · Three states of matterOpen-ended | 4 |
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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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