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BIT Assignment

Explore the classification of organisms from Kingdom to Species, including the differentiation of Animal and Plant Kingdoms and their subgroups. Learn about the characteristics and reproduction methods of various organisms. Discover the classification of plants into Non-flowering and Flowering groups, with detailed descriptions of each subgroup. Understand the unique features of Fungi, Algae, Mosses, Ferns, and Gymnosperms. Gain insights into the distinct characteristics of Angiosperms. Dive into the fascinating world of organisms and their diverse classifications.

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BIT Assignment

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  1. BIT Assignment By CHAN Wai Kay 9th June, 2000

  2. Diversity of Organisms and Classification

  3. Classification of Organisms Kingdom Phylum / Division Class Species

  4. Species • The smallest group of organisms classified which can interbreed with each other to produce fertile offspring

  5. Two Kingdom System • Animals • Plants

  6. Animal Kingdom • Divided into two groups according to the presence or absence of backbone: • Invertebrates : without backbone • Vertebrates : with backbone

  7. Invertebrates

  8. Invertebrates

  9. Invertebrates

  10. Vertebrates • Divided into 5 groups: • Fish • Amphibians • Reptiles • Birds • Mammals

  11. Fish • Aquatic • Cold-blooded • Body covered with slimy and wet scales • Streamline body for easy movement through water • Fins for balance and to control movement • Gills for breathing • External fertilization

  12. Amphibians • Cold-blooded • Scaleless, moist skin • With 4 Limbs • Larvae (tadpoles) use gills for breathing; adults use lungs • External fertilization

  13. Reptiles • Cold-blooded • Body covered with hard, dry scales • Live on land • Breathe with lungs • Internal fertilization; lay shelled eggs

  14. Birds • Warm-blooded • With feathers and wings • Beak for feeding • Lungs for breathing • Internal fertilization; lay shelled eggs

  15. Mammals • Warm-blooded • Hairs on skin • Females have mammary glands for producing milk • Lungs for breathing • Diaphragm present • Internal fertilization; embryos develop inside mothers’ bodies

  16. Summary -- Body Covering of Vertebrate

  17. You may examine the real specimens displayed. Homework Textbook Page 39 HKCEE 1989 5(b) Activities

  18. Plant Kingdom • Can be divided into two groups: • Non-flowering plants • Flowering plants

  19. Non-flowering plants • 5 groups: • Fungi • Algae • Mosses • Ferns • Gymnosperms

  20. Fungus kingdom • Made up of hyphae • No root, stem and leaf • No chlorophyll • Saprophytic or parasitic • Reproduce by forming spores

  21. Algae • Mostly aquatic • May be unicellular or multicellular • No root, stem or leaf • Contain photosynthetic pigments (e.g. chlorophyll) for photosynthesis

  22. Mosses • With simple leaves and stems • No root; with rhizoids for anchorage and absorption of water • Reproduce by spores • No vascular tissues • Found in damp area

  23. Ferns • With true roots, stems, leaves and vascular tissues • Reproduce by spores • Live in damp places

  24. Gymnosperms • With true roots, stems, leaves and vascular tissues • Reproduction by producing seeds • Seeds develop in cones, not enclosed by fruits naked seeds • Needle-shaped leaves to reduce water loss

  25. Angiosperms (Flowering plants) • With true roots, stems, leaves and vascular tissues • With flowers for reproduction • Seeds are produced inside the fruit (matured ovary)

  26. Summary

  27. In Form 6/7, Fungi are grouped into a Kingdom by themselves. They are not considered as plants. In Form 4/5, bacteria are grouped under Fungi. In Form 6/7, bacteria are grouped into a Kingdom by themselves. Remarks

  28. You may examine the real specimens displayed. Homework Textbook Page 37-38, HKCEE 1985 1(a) and HKCEE 1987 1(a) Activities

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