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Which of the following statements is not correct?
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- Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
- Insects that consume pollen or nectar without bringing about pollination are called pollen/nectar robbers.
- Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
- Some reptiles have also been reported as pollinators in some plant species.
Correct Option: A
Pollen grains of different species are incompatible, so they fail to germinate. If the pollen-stigma interaction is compatible, the pollen grain hydrates and germinates shortly following landing on the stigma.
