what happens during pollination
Pollination is the process where pollen is moved from the male part of a flower to the female part so that seeds can form and a new plant can grow.
What is pollination?
- In flowering plants, pollen is produced in the anthers , which are part of the male structure called the stamen.
- The female part is the pistil (carpel), which includes the stigma (sticky tip), style (tube), and ovary (where ovules are).
- Pollination is the transfer of pollen grains from the anther to a receptive stigma of the same species.
Step-by-step: What happens during pollination?
- Pollen release
- The anthers mature and release pollen grains, which are tiny structures carrying the male gametes (sperm cells).
- Pollen transfer
- Pollen is carried from the anther to a stigma by wind, water, or animals like bees, butterflies, birds, and bats.
* In self‑pollination, pollen moves to a stigma on the same flower or plant; in cross‑pollination, it moves to a flower on another plant of the same species.
- Pollen landing on the stigma
- For pollination to be successful, pollen must land on a compatible , mature stigma of a flower of the same species.
* The stigma is often sticky or feathery, helping it catch and hold pollen.
- Pollen germination on the stigma
- Once on the stigma, the pollen grain absorbs water (rehydrates) and becomes active.
* It germinates and starts forming a pollen tube, usually from a special tube cell inside the pollen grain.
- Pollen tube growth down the style
- The pollen tube grows down through the style, forming a narrow channel from the stigma toward the ovary.
* Two male gametes (sperm cells) travel down this pollen tube toward the ovule.
- Reaching the ovule
- The pollen tube enters the ovary and then an ovule through a tiny opening called the micropyle.
* Inside the ovule is the female gamete (egg cell) in the embryo sac.
- Fertilisation (what comes after pollination)
- In flowering plants, one sperm cell fuses with the egg cell to form a zygote (this becomes the embryo).
* The other sperm cell fuses with two nuclei in the ovule to form endosperm, a food‑storage tissue that will feed the developing embryo (double fertilisation).
* After fertilisation, the ovule develops into a seed and the ovary often develops into a fruit.
Mini example story
Imagine a bee visiting a bright, sweet-smelling flower for nectar. As it pushes inside, its body brushes the anthers and picks up yellow dust-like pollen grains. When the bee flies to another flower of the same kind, some of that pollen rubs off onto the sticky stigma. There, the pollen grains germinate, grow pollen tubes down the style, deliver sperm to the ovules, and eventually help form seeds and fruits.
Why pollination matters
- It is an essential step in sexual reproduction of most flowering plants; without it, seeds and many fruits would not form.
- A large portion of human food crops (like apples, almonds, and many fruits and nuts) depend on animal pollinators to move pollen.
In short: during pollination, pollen is moved to a stigma, germinates, grows a pollen tube, and delivers sperm to the ovule—setting the stage for fertilisation, seeds, and new plants.
TL;DR: During pollination, pollen moves from anther to stigma, germinates, grows a tube down the style, and carries sperm to the ovule, allowing fertilisation and seed formation to happen later.
Information gathered from public forums or data available on the internet and portrayed here.
