(a) Leaf in sunlight → starch present (blue-black with iodine). Leaf in dark → no starch (brown iodine). (b) To make it a fair test – temperature affects rate of photosynthesis. End of PSLE 2012 Science Paper (Reconstructed) Note to students: PSLE Science questions test application of concepts, not just memorisation. Practice explaining your answers clearly using scientific keywords.
A student builds two circuits. Circuit A has one bulb and one battery. Circuit B has the same bulb but two batteries connected in series. psle 2012 science questions and answers
(a) What has happened to the steel rod? (b) What is this process called? (a) Leaf in sunlight → starch present (blue-black
A factory releases hot waste water into a river. Algae in the river grow rapidly. End of PSLE 2012 Science Paper (Reconstructed) Note
Note: Due to copyright restrictions, the exact 2012 exam paper cannot be reproduced verbatim. Instead, this document contains reconstructed typical questions from that era, based on the MOE (Singapore) syllabus and common topics tested in 2012. Booklet A: Multiple Choice (Questions 1–28) Question 1 A plant cell and an animal cell are observed under a microscope. Which part is present in the plant cell but absent in the animal cell? A) Nucleus B) Cytoplasm C) Cell wall D) Cell membrane