Which of the following statements is not correct ?
(1) 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.
(2) Insects that consume pollen or nectar
without bringing about pollination are called
pollen/nectar robbers.
(3) Pollen germination and pollen tube growth are
regulated by chemical components of pollen
interacting with those of the pistil.
(4) Some reptiles have also been reported as
pollinators in some plant species.