insect or wind pollination

• petals (insect)


  large and brightly coloured (to attract)
• petals (wind)


  small, and often dull green or brown
• scent and nectar (insect)


  usually scented and with nectar (to attract)
• scent and nectar (wind)


  no scent or nectar
• number of pollen grains (insect)


  moderate number as insects transfer pollen grains efficiently
• number of pollen grains (wind)


  large amounts as most pollen grains are not transferred to another flower
• appearance of pollen grains (insects)


  sticky or spiky
• appearance of pollen grains (wind)

  smooth and light so easily carried by wind without clumping together
• location of anthers (insect)


  inside flower: stiff and firmly to brush off insects
• location of anthers (wind)


  outside flower: loose on long filaments so easily release pollen
• location of stigma (insects)


  inside flower: sticky so pollen grains stick to insect as brushes past
• location of stigma (wind)


  outside flower: feathery so catch drifting pollen grains