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BIOLOGY

BIOLOGY. Diversity of Organisms. Diversity of Organisms. Today I want to talk about Diversity of Organisms. There are three main topics: A) Five kingdoms of organisms B) Classification of Animals C) Classification of Plants. Five kingdoms of organisms. 1 Prokaryotes

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BIOLOGY

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  1. BIOLOGY Diversity of Organisms

  2. Diversity of Organisms • Today I want to talk about Diversity of Organisms. There are three main topics: • A) Five kingdoms of organisms • B) Classification of Animals • C) Classification of Plants

  3. Five kingdoms of organisms 1 Prokaryotes • They include bacteria & blue-green algae. • They are very tiny and can seen with the high power of a light microscope. • They consist of a single cell but do not have any true nucleus ,mitochondria or chloroplasts. < Anthrax bacteria A flagellate >

  4. Five kingdoms of organisms 2 Protoctists • They are tiny and can be seen with the low power of a microscope. • They consist of the single cell with a true nucleus but some are multicellular. • They live mainly in water or inside other organisms. < Amoeba Paramecium >

  5. Five kingdoms of organisms 3 Fungi • They are made up of a single call or thread-like structures called hyphae. • They have cell wall and do not move.They have no chlorophyll and any roots, stems or leaves. • They are usually saprophytic or parasitic and live in soil ir inside other organisms. < Yeast Mushroom >

  6. Five kingdoms of organisms 4 Plants • All plant cells have cell wall and green plant cells contain chlorophyll. • They make their own food by photosynthesis. • They do not move from place to place. < Plant Green plant>

  7. Five kingdoms of organisms 5 Animals • They do not have any cell wall. • They cannot make their own food and must take in food. • Most of them can move from place to place.

  8. Classification of animals

  9. Vertebrates A ) Fish • Their bodies are covered by silmy scales. • They have fins. • Their bodies are streamlined. • They breathe with gills. • They are poikilotherms.

  10. Vertebrates B) Amphibians • They can live both on land and in water • They have wet, silmy skins but no scales. • They have 4 limbs when they are adult. • They are poikilotherms.

  11. Vertebrates C) Reptiles • Many live on land. • They have skin covered by hard, dry scales. • They breathe with lungs. • They are mostly poikilotherms.

  12. Vertebrates D) Birds • They have feathers. • Most can fly with wings but some cannot. • They have beaks. • They breathe with lungs. • They are homoiotherms.

  13. Vertebrates E) Mammals • Their bodies are covered with hair. • Females have well-developed mammary glands for feeding their young. • They breathe with lungs. • They are homoiotherms.

  14. Invertebrates • Most of them are small.

  15. Classification of plants

  16. Flowering plants A) Monocotyledonous plants • They have only one seed leaf in the seed. Iris Rice

  17. Flowering plants B) Dicotyledonous plants • They have two seed leaves in the seeds. • Their leaves have a network of veins. Water lily Broad bean

  18. Non-flowering plants A) Mosses • They are small plants,but no roots. • They have chlorophyll but no vascular tissue. Polytrichum

  19. Non-flowering plants B) Ferns • They are small plants with true roots, stems and leaves. • They have chlorophyll and vascular tissue. dryopteris

  20. Non-flowering plants C) Gymnosperms • They have large plants with roots, stems, leaves and vascular tissue. • Most of them have needle-shaped leaves. Firs

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