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Biodiversity.

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Presentation on theme: "Biodiversity."— Presentation transcript:

1 Biodiversity

2 Domains Bacteria (Eubacteria) Archaebacteria Eukarya

3 Domain Bacteria (Eubacteria)
Characteristics: Unicellular prokaryotes Peptidoglycan cell wall, cell membrane, ribosomes No membrane-bound organelles Naked DNA, single circular chromosome Asexual reproduction= binary fission Heterotrophs, photoautotrophs, chemoautotrophs Rods, spheres, spirals: Gram positive and gram negative

4 Domain Bacteria (Eubacteria)
Examples Bacillus, E. Coli, Streptococcus, cyanobacteria= “blue-green algae”

5 Domain Archaebacteria
Characteristics Unicellular prokaryotes Cell wall (no peptidoglycans), cell membrane, ribosomes, no membrane-bound organelles DNA + histone proteins, single circular chromosome Asexual reproduction = binary fission Extremophiles: halophiles, thermophiles, methanogens

6 Domain Archaebacteria
Examples: Methancoccus, Halobacterium, Thermoproteus

7 Domain Eukarya Characteristics:
Unicellular and multicellular eukaryotes Membrane-bound organelles: nucleus, mitochondria, chloroplasts, Golgi complex, ER, lysosomes Heterotrophs, autotrophs

8 Domain Eukarya Examples: Animals, plants, protists, fungi

9 Domain Eukarya- Kingdom Protista
Mode of nutrition Autotrophs (algae) Heterotrophs (predators) Cell wall Some have cell wall Some have only cell membrane Diatoms and forams have silica (glass) cell walls

10 Domain Eukarya- Kingdom Protista
Reproduction Mostly asexual Binary fission budding Sometimes sexual Other Photoplankton and zooplankton Locomotion via flagella, cilia, and pseudopods Mostly unicellular and some multicellular Examples: Euglena, amoeba, paramecium, and kelp

11 Domain Eukarya- Kingdom Fungi
Mode of nutrition- Heterotrophs (by absorption) Cell wall- Cell wall (chitin)

12 Domain Eukarya- Kingdom Fungi
Reproduction Mostly sexual Asexual for unicellular yeasts Other multi=-nucleated cells basidiomycetes= mushrooms Bread mold yeast

13 Domain Eukarya- Kingdom Plantae
Mode of nutrition Autotrophs (photosynthesis) Cell wall Cell wall (cellulose)

14 Domain Eukarya- Kingdom Plantae
Reproduction Sexual Alternation of generations Spores and seeds Asexual Cuttings, tubers, etc Other Mosses Ferns Gymnosperms angiosperms

15 Domain Eukarya- Kingdom Animalia
Mode of nutrition Heterotrophs (ingestion) Cell wall no

16 Domain Eukarya- Kingdom Animalia
Reproduction- Sexual (gametes) Other- All multicellular Invertebrates: sponges, worms, molluscs, arthropods Vertebrates: fish, amphibians, reptiles, birds, and mammals


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