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CAIE IGCSE Biology 16.3.4 Insect- vs Wind-pollinated Pollen

Practise distinguishing insect- and wind-pollinated pollen grains from diagrams showing size, surface and shape.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • identify insect-pollinated grains as relatively large with sticky or spiky surfaces
  • identify wind-pollinated grains as smaller, lighter and smoother
  • compare diagrams at the same scale before using size as evidence for the pollination method

16.3.4—Pollen grains of insect-pollinated question 1

[Maximum number: 2]

Fig. 6.2 is a scanning electron micrograph of some pollen grains from wind-pollinated flowers and insect-pollinated flowers.

Fig. 6.2

Fig. 6.2

Explain how the pollen grain labelled J is adapted for insect pollination.

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