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Stigma

Style

Ovary

39.3 Self-Incompatibility Pollen grains do not germinate normally if their S allele matches one of the S alleles of the stigma.Thus, the egg cannot be fertilized by a sperm from the same plant.

Ovary

39.3 Self-Incompatibility Pollen grains do not germinate normally if their S allele matches one of the S alleles of the stigma.Thus, the egg cannot be fertilized by a sperm from the same plant.

Some aquatic angiosperms are pollinated by water carrying pollen grains from plant to plant. Animals, including insects, birds, and bats, carry pollen among the flowers of many plants.

Plants Pollinated Water Images
39.2 Wind Pollination The numerous anthers on these inflorescences (groups of flowers) of a hazelnut tree all point away from the stalk and stand free of the plant, promoting dispersal of the pollen by wind.

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Essentials of Human Physiology

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