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Presentación1

  1. 1. LIVING BEINGS REPRODUCTION: - Plants and fungi 1
  2. 2. INDEX:1.- What’s reproduction?2.- Asexual reproduction3.- Sexual reproduction4.- Plants reproductions 4.1- Flowering plants 4.1.1- The parts of the flower 4.1.2.- Flowering plants reproduction 4.1.3-.- Pollination. 4.2- Plants without flowers. 4.2.1.- Ferns 4.2.2.- Moss5.- Fungi 2
  3. 3. 1.-WHAT IS REPRODUCTION?Reproduction is the capacity of all living systems togive rise to new systems similar to themselves. Theterm reproduction may refer to this power of self-duplication of a single cell or a multicellular animal orplant.The reproductive process always includes thetransmission of hereditary material from the parentsto the offspring. 3
  4. 4. 3.-ASEXUAL REPRODUCTIONAsexual reproduction onlyneeds one parent, unlikesexual reproduction, whichneeds two parents. Sincethere is only oneparent, there is no fusion ofgametes and no mixing ofgenetic information. As aresult, the offspring aregenetically identical to theparent and to each other.They are clones. 4
  5. 5. 2.-SEXUAL REPRODUCTIONSexual reproduction happenswhen a male gamete and a femalegamete join. This fusion ofgametes is called fertilisation.Sexual reproduction allows someof the genetic information fromeach parent to mix, producingoffspring that resemble theirparents, but are not identical tothem. In this way, sexualreproduction leads to variety inthe offspring. Animals and plantscan reproduce using sexualreproduction. 5
  6. 6. 4.- PLANTS REPRODUCTION 4.1.- Flowering Plants. Flowering plants produce seeds inside the base of the flower, the ovary. Flowering plants make up over 80 per cent of all plant species. The flowering plants reproduce sexually. 6
  7. 7. 4.1.1.- The part of the flowers. 7
  8. 8. The petals are often colourful. They attract insects tothe flowers.The stamens are the males sexual organs. They consistof the anther and the filament. The anther containsthe pollen.The pistils is the female sexual organ. The parts ofthe pistil are the stigma, the style and the ovary. Theovary contains the ovules.The sepals are small and usually green. They protectthe flower when it is a bud. 8
  9. 9. 4.1.2.-Flowering plants or angiosperm.Known as angiosperms (which means “seedcases”), flowering plants produce seeds inside theswollen base of the FLOWER, the ovary.The flowers contains the plant’s reproductive organs.They are the showy parts of flowering plants. Manydepend on animal pollinators, which they attract withtheir colour or scent.http://www.factmonster.com/dk/science/encyclopedia/flowering-plants.html 9
  10. 10. 4.1.3.-Pollination.Pollination is the process meanwhile the stigmacatch the pollen. The pollen can be carry by insectsbirds or by the wind. The pollen caught by thestigma is transported to the ovary through thestyle, there the pollen fertilise the ovules andfinally the ovules develop into a seed.Here you’ve got two videos: 1, 2 10
  11. 11. 5.- Non-seed plantsFerns usually have underground stem and longdivided leaves. They don’t have seeds. They havesporesMosses have very short stems and small leaves.They don’t have roots. They don’t have seeds. Theyhave spores. 11
  12. 12. 5.- Fungi are not either animals orplants, though they are more closelyrelated to animals than they are to plants.Like ferns or mosses they reproduce byspores.A spore is a single-celled reproductivebody that can grow into a new organism. 12

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