Biology 9700 · AS & A Level · Investigation of limiting factors

Investigation of limiting factors — practice question

Photosynthesis is a complicated process with a light dependent stage and a light independent stage.
(a(i))[2]

State the products from the light dependent stage that are used in the light independent stage.

(a(ii))[2]

Explain the function of chlorophyll b in photosynthesis.

(b)[1]

Complete Table 5.1 by working out the light intensity at distance $0.100\,\text{m}$ using $\frac{1}{d^2}$.

(c(i))[3]

From Fig. 5.1, you should:\n• state the interval over which light intensity is the limiting factor\n• explain why, beyond this interval, light intensity is not limiting the photosynthetic rate.

(c(ii))[3]

At a light intensity of $1600$, explain why different colour filters produce different photosynthesis rates.

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