Pollination and Fertilisation - PowerPoint PPT Presentation

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Pollination and Fertilisation

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  1. Pollination and Fertilisation

  2. Self-pollination • Pollen from the anther is transferred to the stigma Pollination

  3. Pollen from the anther of one plant is transferred to the the stigma of a different plant Cross Pollination

  4. Wind Pollinated Flowers

  5. Wind/Insect Pollination

  6. Insect Pollinated Flowers

  7. Many plants reproduce successfully through assexual reproduction. Others use sexual reproduction to pass on their genetic material. This is challenging because most plants do not move. Making New Plants

  8. In animals the product of sexual reproduction is the zygote. In plants the product of sexual reproduction is the seed. The seed contains an embryo, a food supply and a seed coat (protects seed from dehydration). Plants can be classified into two groups based on their seed type. Making New Plants

  9. Vascular Plants • Subdivided into two groups -- Seedless vascular plantsand Seed-bearing vascular plants Club Moss

  10. Includes club moss), horsetails whisk ferns and ferns Seedless Vascular Plants Whisk ferns Horsetails

  11. Includes two groups – Gymnosperms and Angiosperms Gymnosperms have naked seeds in cones Angiosperms have flowers that produce seeds to attract pollinators and produce seeds Seed-Producing Vascular Plants

  12. Gymnosperms

  13. Gymnosperms • Contains the oldest living plant – Bristle cone pine • Contains the tallest living plant – Sequoia or redwood

  14. Gymnosperms

  15. Gymnosperms

  16. Gymnosperms do not produce flowers. Seeds are produced inside cones. Their seeds have a coat but they are not enclosed in a case. Gymnosperms