Fertilisation Process
| Fertilisation process |
|---|
| After Pollination → pollen grain germinates → after it comes into contact with stigma. → in response to the sugary fluid secreted by stigma |
| Pollen Tube grows out from each pollen grain. → male gamete enters pollen tube |
| As pollen tube grows → it secretes enzymes → to digest surrounding tissues of stigma and style. - it also undergoes process of Mitosis → allows growth/lengthening of pollen tube to allow male gamete to travel to ovum → thus pollen tube grows down style into the ovary |
| Pollen tube enters ovule → through an opening in the ovule wall called micropyle |
| Within ovule → tip of pollen tube → absorbs sap and bursts → releasing male gamete |
| Nucleus of male gamete fuses with the nucleus of the ovum to form the zygote This is fertilisation |
| After fertilisation → ovary develops into fruit → and ovule develops into the seed. |
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