A researcher keeps young bean plants in a chamber under bright light at a constant temperature. Increasing the carbon dioxide concentration causes the rate of oxygen release to rise.

The researcher concludes: 'Temperature was the limiting factor before the carbon dioxide concentration was increased.'

Which is the best evaluation of the researcher's conclusion?

Correct, because the rise in oxygen release suggests that temperature and carbon dioxide were both limiting.

Incorrect, because the rise in oxygen release suggests that oxygen was the factor in shortest supply.

Correct, because the rise in oxygen release suggests that the temperature was below the optimum.

Incorrect, because the rise in oxygen release suggests that carbon dioxide was limiting before its concentration was increased.

A researcher keeps young bean plants in a chamber under bright light at a constant temperature. Increasing the carbon dioxide concentration causes the rate of oxygen release to rise.

The researcher concludes: 'Temperature was the limiting factor before the carbon dioxide concentration was increased.'

Which is the best evaluation of the researcher's conclusion?

Correct, because the rise in oxygen release suggests that temperature and carbon dioxide were both limiting.

Incorrect, because the rise in oxygen release suggests that oxygen was the factor in shortest supply.

Correct, because the rise in oxygen release suggests that the temperature was below the optimum.

Incorrect, because the rise in oxygen release suggests that carbon dioxide was limiting before its concentration was increased.

1.4 Photosynthesis

Question 32

Markscheme

1.4 Photosynthesis

Question 32

Markscheme

1.4 Photosynthesis

Question 32

1.4 Photosynthesis Questions

1.4 Photosynthesis

Question 32

1.4 Photosynthesis Questions