The equipment in Fig. 2.1 was used to explore how varying conditions change the rate of photosynthesis in an aquatic plant. A student looked at the effects of light and carbon dioxide on the rate of photosynthesis. The number of oxygen bubbles produced in one minute was counted under four different conditions. The outcomes are given in Table 2.1.
(a)[2]
State two conclusions about the conditions needed for photosynthesis from the information in Table 2.1.
(b)[4]
Suggest and explain the effect this would have had on the results of test 2 and test 3.
(c)[2]
The word diffusion on the left can be connected to two boxes on the right to form two correct statements about diffusion. Draw two straight lines from diffusion to the boxes to complete both statements.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Light is required for photosynthesis” …