Fig. 2.1 shows a magnified pollen grain from each of two plant species, A and B. magnification x830 magnification x200 pollen grain from plant species A pollen grain from plant species B [Figure 2.1]

1. (a)(i)Use the information in Fig. 2.1 and your biological knowledge to describe three differences between the pollen grains from species A and species B. Write your answers in Table 2.1. Table 2.1 pollen grain from species A pollen grain from species B[3]
2. (a)(ii)Cross-pollination takes place in both species A and species B. Describe what is meant by the term cross-pollination.[3]
3. (a)(iii)Using the information provided by Fig. 2.1, describe how cross-pollination is most likely to occur in species A and in species B. species A species B[3]
4. (b)Fig. 2.2 is a photograph of the flowers of species A. [Figure 2.2] List two features that would be present in the flowers of species B that are not present in those of species A. 1 2[2]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.