CAIE A Level Biology 9700 · Photosynthesis

Photosynthesis: explain question

Explain4 marksStandard

A student investigated the effect of light intensity on the rate of photosynthesis in the aquatic plant Elodea canadensis at two different temperatures, 15°C and 25°C. The rate of photosynthesis was measured by counting the number of oxygen bubbles produced per minute. The results are shown in the table below.

Light intensity (arbitrary units)Rate of photosynthesis (bubbles per minute) at 15°CRate of photosynthesis (bubbles per minute) at 25°C
000
501012
1001824
2002230
4002331

Explain the effects of light intensity and temperature on the rate of photosynthesis, using the data.

0 words · 4 marks

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