Double Fertilization (Sexual Reproduction In Flowering Plants)

Reproduction In Flowering Plants

Key Words:+ Pollination+ Fertilization+ Zygote+ Fruit+ Seed

Presentation by: Hamza Raza Ayesha Arif Ammar Shaikh Zainab Adnan GRADE 11The City School InternationalWhole Hearted Thanks to Our Bio Teacher Miss Iram

Pollination

• The transfer of pollen from the anthers to the stigma.

• Cross or self-pollination• Flower is wind or insect

pollinated• Anthers contain pollen,

which contain male gametes. Ovary contains female gametes

Fertilization

• Pollen make tube to ovary by secreting enzymes

• One gamete can only fertilize one female gamete

• When the gametes fuse, zygote is formed

• Fertilization has taken place

The Fruit

• Ovary becomes fruit, shielding the seed

• The seeds are dispersed by animals, water or air

• The seeds grow to become a plant

• Thus, the cycle shown is repeated

Thank you