Investigation of limiting factors — practice question

Using Fig. 4.1, suggest how the flowering habit of maize promotes wind pollination.

In a maize plant, the anthers usually mature and shed pollen before the stigmas are ready to receive it. This promotes cross-pollination. Explain two possible advantages of cross-pollination to a plant species.

Using Fig. 4.2, compare how temperature affects the photosynthesis rates of wheat and maize.

Explain why the photosynthesis rates of wheat and maize differ at $28\,^{\circ}\text{C}$.

Using Table 4.1, suggest reasons for the difference in protein content between wheat and white rice.

State, with a reason, which type of grain would be beneficial for a person with anaemia.

State, with a reason, which type of grain would be beneficial for a person with anaemia.