L2: Fertilisation

• Why do seeds have a seed coat?

  For protection
• What is asexual reproduction in plants?

  Reproduction that doesn't require fertilisation and will result in identical plants
• When the male and female nuclei fuse, a zygote is formed
• After fertilisation, what do the female parts of the flower develop into?

  A fruit
• What do the ovules develop into after fertilisation?

  Seeds
• What does the ovary wall develop into after fertilisation?

  The rest of the fruit
• Fertilisation:

  Pollen grains are carried to the stigma of flowers. If the pollen grain is from the same species, it will grow into a pollen tube. When the male and female egg cell fuse into one, a zygote is formed. The zygote splits (cell divison) again and again to form an embryo. The embryo develops a tiny root and tiny shoot
• What is the part on the inside of a seed?

  A food store
• What is the purpose of the food store in a seed?

  Energy source
• What is the outside layer on the seed?

  Seed coat
• What is the purpose of the seed coat?

  Protect the seed
• What is the purpose of the tiny shoot on a seed?

  To grow leaves
• What is the purpose of the tiny root on a seed?

  To absorb water
• Which of the following are an adaptation of a wind dispersed seed?

  A¦ Heavy

  B¦ Light

  C¦ Small

  D¦ Large

  Light