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Gymnosperm vs Angiosperm

Gymnosperm vs Angiosperm. Flowers, Fruits and Seeds too. Seed Plants. Seed plants are plants that produce seeds in order to reproduce. Two types of seed plants exist today: Gymnosperms “gymno” – meaning “naked” “sperm” – meaning “seed” Angiosperms “angio” – meaning “vessel”

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Gymnosperm vs Angiosperm

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  1. Gymnosperm vs Angiosperm Flowers, Fruits and Seeds too

  2. Seed Plants • Seed plants are plants that produce seeds in order to reproduce. • Two types of seed plants exist today: • Gymnosperms • “gymno” – meaning “naked” • “sperm” – meaning “seed” • Angiosperms • “angio” – meaning “vessel” • “sperm” – meaning “seed”

  3. Gymnosperm Characteristics • Oldest of seed plants • Used to be most abundant type of plant on the planet, now only four groups exist: • Cycads • Conifers • Ginkgoes • Gnetophytes • Have needle-like or scale-like leaves

  4. Gymnosperm Examples • Cycads • Live mainly in tropic regions • Look like a palm tree but produce a cone • Cycad Cone

  5. Gymnosperm Examples • Conifers • Cone bearing plants • Have needles for leaves • Most diverse group • Pines • Sequoias • Junipers • Western White Pine

  6. Gymnosperm Examples-Conifers con’t. • Sequoia Juniper

  7. Gymnosperm Examples • Gnetophyte • Can grow in hot deserts or in tropical rain forests • Can live to 1,000 years • Welwitschia

  8. Gymnosperm Reproduction • Most gymnosperms produce cones • Male – makes pollen • Female – contains the ovule • Ovule contains the egg cell which, after fertilization, becomes a seed • Fertilization – the joining of a sperm and an egg

  9. Gymnosperm Reproduction

  10. Angiosperm Characteristics • ALL angiosperms produce flowers • ALL angiosperms have seeds that are enclosed in fruits (the “vessel”)

  11. Angiosperm Examples • Apple blossom • Wheat

  12. Angiosperm Examples • Lily • Tomato

  13. ANYTHING THAT HAS A FLOWER!

  14. Flower Structure • The flower is the reproductive structure of an angiosperm. • Sepals – leaf like structures that protect the developing flower • Petals – generally the most colorful part of the flower • Color, size, shape and odor attract pollinators

  15. Flower Structure - Petals • Bright blue and violet – bees • Red, pink, fuchsia or purple – Hummingbirds • Yellow, orange, pink and reds - Butterflies

  16. Flower Structure – Stamen • Stamen – the MALE part of the flower, has two parts: • Anther – Makes pollen • Filament – holds up the anther

  17. Flower Structure - Pistil • Pistil – the FEMALE part of the flower, has three parts • Stigma – has a sticky surface to catch pollen • Style – tube – like structure the pollen travels down • Ovary – contains the ovules (eggs) and becomes the fruit after fertilization • Ovules (eggs) – become the seeds after fertilization

  18. Flower Structure

  19. Fruits • The fruit is a ripened ovary used to protect the developing seeds, enable the seeds to be carried to a new location and nourish the seeds when deposited on the ground • If it has a seed, it is a FRUIT (according to science) • Peppers, cucumbers, avocadoes are fruits

  20. Fruits

  21. Seeds • Seeds – ovules that become fertilized • Carry the genetic information for a new plant

  22. Seed Dispersal • Seeds are dispersed or spread in 4 main ways: • Wind • Water • Animal • Fur • Feces • Expulsion

  23. Wind dispersal

  24. Seed Dispersal

  25. Seed dispersal

  26. Just Common Courtesy

  27. Seed Dispersal

  28. Life Cycle of an Angiosperm

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