CAIE IGCSE Biology 16.3.12 Pollen Tube Growth & Fertilisation
Practise sequencing pollen-tube growth from the stigma through the style to the ovule, ending in nuclear fusion.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- state that a pollen grain germinates and grows a pollen tube down the style
- trace the male nucleus through the pollen tube as it enters an ovule
- describe fertilisation as fusion of the male nucleus with the egg-cell nucleus
16.3.12—Growth of the pollen tube and its question 1
Fig. 2.1 is a photograph of a spider plant, Chlorophytum comosum. Spider plants can reproduce by producing an identical plantlet, which grows away from the single parent plant.
Fig. 2.1
Outline the events that occur in the flower after pollination.
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