This P5 Science CA1 paper from Anglo Chinese (2025) contains 7 questions worth 15 marks. Use it as a study reference for Science topics typically tested at P5 level in Singapore schools.
Q1Structured2 marks🖼 Visual
(a) Draw arrows ( → ) in the diagram above to show how water and mineral salts are transported in plants. (b) Joe cut a stalk of a white flower into halves. He placed one half into a beaker with red-coloured water and the other half into a beaker with blue-coloured water. He expected the flower to turn purple after leaving the set-up overnight. The next day, Joe observed that one half of the flower turned red, while the other half turned blue instead. Explain why.
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On a healthy plant, a ring of stem part R, that contains the food-carrying tubes was removed as shown. The plant stores its excess food in part X. Explain why part X became smaller a few days after part R was removed.
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(a) Describe how oxygen in the surroundings enters the human circulatory system. (b) The table compares the amounts of certain gases in inhaled air and exhaled air. Fill in the words "More", "Less" or "Same" in the boxes to complete the table.
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The diagram shows the direction of blood flow in humans. The arrows represent blood vessels transporting blood to the different parts of the body. (a) Name parts P and Q. P: _____ Q: _____ (b) State one similarity between the human circulatory system and the plant transport system.
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The table shows June's heart rate while doing activities with changing difficulty. (a) State the relationship between the different activities and June's heart rate. (b) Explain how the different activities affect June's heart rate.
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Lauren observed the underside of a leaf as shown. (a) In the diagram, label and name the part of the leaf that performs the same function as the gills of a fish. (b) Lauren wanted to find out if coating the leaves of a plant with oil affects its growth. She prepared two similar setups which she watered daily. She only coated both sides of the leaves of the plant in setup X with oil. State two other variables that Lauren should keep the same in her experiment. (c) After 10 days, Lauren observed that only plant X withered. Explain why.
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