Biology 5090 · O Level · Photosynthesis

Photosynthesis — practice question

Students carried out an investigation into the rate of photosynthesis at different light intensities. They measured how many oxygen bubbles a submerged aquatic plant gave off per minute when it was positioned at various distances from a light source. Which results would be expected from this investigation?

  • Anumber of bubbles per minute at $20,40,60,80,100,120\ \text{cm}$: $8,18,37,51,62,65$
  • Bnumber of bubbles per minute at $20,40,60,80,100,120\ \text{cm}$: $8,18,37,25,19,6$
  • Cnumber of bubbles per minute at $20,40,60,80,100,120\ \text{cm}$: $65,62,51,45,14,4$
  • Dnumber of bubbles per minute at $20,40,60,80,100,120\ \text{cm}$: $37,18,8,19,25,45$

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