Which of the following statements is not correct?

Explanation

Pollen­pistil interaction is the group of events that occur from the time of pollen deposition over the stigma to the time of pollen tube entry into the ovule. It is a safety measure to ensure that illegitimate crossing does not occur. Pollen grains of a number of plants may settle over a stigma. The pollens belonging to the same species would germinate while others fail to do so but the pollen tube of the compatible pollen will grow through the style to reach the ovule whereas growth of incompatible pollens will be arrested at stigmatic disc or sometimes in the beginning part of the style. A. This is correct as chemical components of pollen regulate pollen germination and pollen tube growth. B. Animals(including reptiles) help in the dispersal of pollen grains. D. This is correct as insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.