Psle 2012 Science Questions And Answers Apr 2026

(a) Name this phenomenon. (b) What causes it?

(a) Producer. (b) Grasshopper population will increase initially because there are no frogs to eat them.

(a) Name one structure seen in the onion cell but not in the cheek cell. (b) What is the function of the nucleus?

(a) It has become a temporary magnet. (b) Magnetisation by stroking. psle 2012 science questions and answers

(a) What is the role of the grass in this food web? (b) If all frogs are removed, explain what will happen to the grasshopper population.

(a) Refraction. (b) Light bends when it passes from water to air (different densities).

(a) North pole. (b) Like poles repel.

C) Magnetic force

(a) Name the process that caused the water droplets. (b) State one condition needed for this process to occur.

(a) Circuit B. (b) Two batteries in series provide a higher voltage, increasing the current and brightness. (a) Name this phenomenon

A mango seed is planted in a pot with soil. It is watered regularly but kept in a dark cupboard. After 2 weeks, the seed sprouts but has yellow leaves.

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.

(a) Cell wall (or large vacuole or chloroplasts – but onion cells have no chloroplasts; cell wall is best). (b) Controls cell activities / contains genetic material. (a) It has become a temporary magnet

The diagram shows a food web: Grass → Grasshopper → Frog → Snake → Eagle

(a) Converted to heat and sound energy. (b) Kinetic energy.