Advanced Science Primary 6 Energy

An experiment was set up to investigate the rate of photosynthesis. A water plant was placed at different distances from a light source. The number of bubbles produced per minute was recorded. Which graph correctly shows the relationship?

A A graph showing bubbles remaining constant
B A graph showing bubbles decreasing as distance decreases
C A graph showing bubbles increasing as distance increases
D A graph showing bubbles decreasing as distance increases
Show Worked Solution

Worked Solution

Step 1: Understand that bubbles represent oxygen produced during photosynthesis.Step 2: Increasing distance reduces light intensity.Step 3: Lower light intensity decreases the rate of photosynthesis, resulting in fewer bubbles.

Correct answer: A graph showing bubbles decreasing as distance increases

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