wind
Insect polination is when the insect carries a pollen from one flower to anothe
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pollination may also occur through wind, water, or by birds, bats.
Cross pollination is when the wind or a insect carries pollen from one flower to another. Self pollination is when a flower produces pollen and uses it in asexual reproduction.
The two types of pollen are wind-dispersed pollen and insect-dispersed pollen. Wind-dispersed pollen is typically small, light, and produced in large quantities, while insect-dispersed pollen is often larger, heavier, and designed to stick to insect bodies for transport.
pollen
When an insect like bee's lands on a flower, pollen sticks to it's legs. So when an insect moves to another flower pollen gets on that flower and so on and so on as the insect moves from one plant to another.
The flowers of the cacao tree are not fertilized by bees like most flowers. These flowers are pollinated by gnats. It is this insect that carries the pollen from flower to flower which allows the cocoa pods to grow.
Insect-pollinated flowers usually have sticky pollen to increase the chances of pollen transfer. The stickiness helps the pollen grains adhere to the bodies of insects as they move between flowers, promoting effective pollination. This helps ensure successful reproduction for the plant.
A pollen grain's surface is often rough and sticky, allowing it to adhere to an insect's body as it moves from flower to flower. Additionally, the shape and size of pollen grains match well with insect hairs, making them easy to brush off as the insect travels. Lastly, the lightweight nature of pollen grains makes them easily dispersed by the movement of insects.
pollen and nectar
The bee sees pollen with its eyes. It carries pollen because the pollen stick to the hind legs!