Ten-Year Series · PSLE 2023
PSLE Science 2023 Answers
The answer key for the PSLE Science 2023 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) | Interactions · Environmental pollutionMCQ | 2 |
| Q2 | (2) | Cycles · Life cycles of animalsMCQ | 2 |
| Q3 | (4) | Cycles · Plant reproductionMCQ | 2 |
| Q4 | (4) | Systems · Human digestive systemMCQ | 2 |
| Q5 | (2) | Diversity · Classifying living thingsMCQ | 2 |
| Q6 | (3) | Diversity · Classifying living thingsMCQ | 2 |
| Q7 | (3) | Systems · Plant transport xylem & phloemMCQ | 2 |
| Q8 | (2) | Cycles · Plant reproductionMCQ | 2 |
| Q9 | (2) | Diversity · Classifying living thingsMCQ | 2 |
| Q10 | (3) | Energy · Forms of energyMCQ | 2 |
| Q11 | (1) | Interactions · Food chainsMCQ | 2 |
| Q12 | (2) | Systems · Plant parts and functionsMCQ | 2 |
| Q13 | (3) | Cycles · Life cycle of a plantMCQ | 2 |
| Q14 | (4) | Diversity · Classifying living thingsMCQ | 2 |
| Q15 | (3) | Diversity · MaterialsMCQ | 2 |
| Q16 | (2) | Cycles · Water cycleMCQ | 2 |
| Q17 | (4) | Interactions · ForcesMCQ | 2 |
| Q18 | (3) | Diversity · MaterialsMCQ | 2 |
| Q19 | (1) | Energy · Heat and temperatureMCQ | 2 |
| Q20 | (3) | Energy · Heat conductors vs insulatorsMCQ | 2 |
| Q21 | (4) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q22 | (4) | Interactions · ForcesMCQ | 2 |
| Q23 | (4) | Systems · Series vs parallel circuitsMCQ | 2 |
| Q24 | (4) | Interactions · MagnetsMCQ | 2 |
| Q25 | (1) | Cycles · Three states of matterMCQ | 2 |
| Q26 | (1) | Interactions · ForcesMCQ | 2 |
| Q27 | (1) | Interactions · ForcesMCQ | 2 |
| Q28 | (4) | Energy · Light and shadowMCQ | 2 |
| Q29 | Model answer in worked solution | Cycles · Life cycles of animalsOpen-ended | 4 |
| Q30 | Model answer in worked solution | Systems · Human body systemsOpen-ended | 4 |
| Q31 | Model answer in worked solution | Interactions · Environmental pollutionOpen-ended | 4 |
| Q32 | Model answer in worked solution | Interactions · Food chainsOpen-ended | 4 |
| Q33 | Model answer in worked solution | Systems · Plant vs animal cellsOpen-ended | 3 |
| Q34 | Model answer in worked solution | Cycles · Plant reproductionOpen-ended | 3 |
| Q35 | Model answer in worked solution | Cycles · Changes of stateOpen-ended | 3 |
| Q36 | Model answer in worked solution | Energy · Forms of energyOpen-ended | 4 |
| Q37 | Model answer in worked solution | Energy · Heat and temperatureOpen-ended | 4 |
| Q38 | Model answer in worked solution | Interactions · MagnetsOpen-ended | 5 |
| Q39 | Model answer in worked solution | Systems · Series vs parallel circuitsOpen-ended | 3 |
| Q40 | Model answer in worked solution | Energy · Heat and temperatureOpen-ended | 3 |
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