Which of the following statements is $NOT$ correct?

• A
  Insects that consume pollen or nectar without performing pollination are called pollen/nectar robbers.
• B
  Pollen germination and pollen tube growth are regulated by the chemical components of the pollen that interact with the pistil.
• C
  In some plant species,some reptiles have also been reported to perform pollination.
• D
  In many species,pollen grains can germinate on the stigma of the flower,but only pollen of the same species can grow through the style.