O-LevelBiologyEcology & Environment5090/21 · May/June 2019 · Q49 Marks
The diagram shows stages in the life cycle of the same plant. [Figure 4.1]
- (a)State the number of each of the following parts of the flower shown in the diagram. petals filaments[2]
- (b)On the diagram of the flower label the ovary (the structure containing ovules).[1]
- (c)(i)For this plant, state its method of pollination and give reasons for your answer method of pollination reasons[3]
- (c)(ii)its method of seed dispersal and give reasons for your answer. method of seed dispersal reasons[3]
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.
Mark scheme
Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.
- [2] petals 4;
- [2] filaments 8;
- [1] ovary labelled between flower and leaf ;
- [3] insect/cross ;
- [3] petals;
- [3] attract insects;
- [3] landing platform for insects AW ;
- [3] contact with stamens / anther / pollen / stigma;
- [3] wind; R wind pollination
- [3] small seeds;
- [3] large surface area / hairy AW ;
- [3] many seeds;
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