Standard Science Primary 3 Cycles

Jun Jie wants to find out if seeds need sunlight to germinate. He sets up two pots with identical seeds and moisture. Where should he place them?

A One in a refrigerator and one in a sunny garden.
B One in a sunny garden and one in a dark cupboard.
C Both in a dark cupboard.
D Both in a sunny garden.
Show Worked Solution

Worked Solution

Step 1: To test a variable (sunlight), only that variable should change. Step 2: All other conditions (water, air, warmth) must be the same. Step 3: Comparing light vs. dark identifies if light is necessary.

Correct answer: One in a sunny garden and one in a dark cupboard.

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