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Which of the following statements is not correct?
A
Insects that consume pollen or nectar without bringing about pollination are called pollen nectar robbers.
B
Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
C
Some reptiles have also been reported as pollinators in some plant species.
D
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.
Explanation
Foreign pollen is rejected by the pistil.
Detailed Solution
Pollen grains of other species are incompatible and do not germinate on the stigma. Pollen grains of the same species germinate to produce pollen tubes, and more than one may grow; only one pollen tube penetrates through the style to reach the embryo sac to release male gametes.