Question

Hi friends good morning . My question is what is difference between the wind pollination and insects pollination.

Answer 1

Flowers that are wind-pollinated do not need to be attractive. ... Insect pollinated flowers have large, heavy pollen that need help spreading from plant to plant. To get help, they use petals, scents, and nectar to attract the pollinators, that get pollen and nectar in return for their assistance.

Answer 2

Insect pollinated flowers has features that allow insects, birds, or other animals to pollinate them when they feed on the nectar. The pollen grains will stick onto the outer covering of the insect and when the insect brushes pass the stigma of the same flower or another flower, the pollen grains will stick onto the stigma of the flower and pollinate the flower. the pollen grain will then grow a pollen tube down the style to reach the ovary which contains the ovules, and when the two sex cells fuse, fertilisation will take place and the ovule will develop into a seed and the ovary a fruit.

To maximise the chance of fertilisation taking place, insect pollinated flowers usually have:

Large, scented and brightly coloured petals to attract pollinators

Filaments and anthers inside the flower

Stigma(s) inside the flower

Large and sticky/spiky pollen grains

Small and sticky stigma

Nectar for pollinators to feed on

Examples of such flowers are rose, hibiscus, sunflowers, etc.

On the other hand, wind pollinated flowers do not need pollinators as the pollen grains fall off when wind blows past onto the stigma.

Wind pollinated flowers usually have:

Small and dull coloured petals

Filaments and anthers hanging out of the flower

Stigma(s) hanging out of the flower

Small and dry pollen grains

Large and feathery stigma to catch the pollen grains that are blown off

No nectar

Examples of such flowers are grass, rice, corn, barley, etc.