Standard Science Primary 4 Cycles

Ravi wants to find out if seeds need sunlight to germinate. He prepares two pots of seeds. Which variable must be kept the SAME for a fair test?

A The color of the seeds.
B The size of the pot.
C The amount of sunlight.
D The presence of water.
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Worked Solution

Step 1: Identify the independent variable (sunlight). Step 2: For a fair test, all other conditions for growth (water, air, warmth) must be kept the same. Step 3: Water is an essential requirement for germination.

Correct answer: The presence of water.

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