life+cycle+and+reproduction+-+fertilisation+strategies

=**Fertilisation Strategies:**= - Most flowers are bisexual, they produce both male and female gametes.

Self Fertilisation:
- Pollen is trnasferred to the stigma of the flower of the same plant. - This allows for genetic continuity, the environments are often constant so there is no need for variation.

Cross Fertilisation:
- Separate flowers on the same plant. e.g. Zucchini. - In some plants like the willow, the flowers are on separate plants. - Self-recognition responses prevent egss being fertilised by self pollen

No Fertilisation:
- Produce an embryo without prior fertilisation. - Mother cell does not undergo meiosis but mitosis instead. - The cell then develops the same same way a sexually produced zygote does. - A genetic clone of the parent is produced - Process is known as **apomixis**

By Adam