The 2012 Primary School Leaving Examination (PSLE) Science paper in Singapore was structured into two sections: (Multiple Choice Questions) and

The life cycle of a mosquito: Egg → Larva → Pupa → Adult.

This question tests the property of surfaces regarding radiation.

Shirt B had a larger exposed surface area compared to Shirt A.

A ring of bark (including the phloem) was removed from a woody stem. After two weeks, a swelling was observed above the ring. Explain why. Answer: Concept: Food (sugar) transport.