Plant classification and adaptation


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Chapter 4: Plant Classification and Adaptation

Science and Health Third Edition
Phoenix Publishing House

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Plant classification and adaptation

  1. 1. Plant Classification and Adaptation CHAPTER 4
  2. 2. Plants are living things in different sizes – from very tiny to very tall ones. The smallest plant cannot be seen without using a microscope. The big ones like Acacia tree, can be seen even from far afar.
  3. 3. Spermatophytes Seed producing plants Such as trees, shrubs, crop plants and vegetables, garden and wild flowers, weeds and grasses.
  4. 4. Gymnosperms vs Angiosperms
  5. 5. Gymnosper ms Seed-producing plants that do not have true flowers Also known as conifers because they produce woody cones Cones are fruits of conifers and are made up of scale Are grown to stop the force of the winds around farms and to decorate parks and yards
  6. 6. Angiosperms Seed-producing plants that produce flowers Garden and wildflowers, weeds, plants that produce crops and vegetables, cereal grains, and trees that lose their leaves in the fall Most of the trees in the Philippines Divided into two groups: monocotyledons or monocots Dicotyledons or dicots
  7. 7. Monocots Plants that produce seeds with one seed leaf Mono means “one” cot means “seed leaf” Usually have narrow, smooth edged, parallel-veined leaves
  8. 8. Dicot s Plants that produce seeds with two seed leaves Di means “two” cot means “seed leaf” Usually have broad, irregularly shaped, netted leaves
  9. 9. Dicot s
  10. 10. Plants That Do Not Produce Seeds
  11. 11. Plants That Do Not Produce Seed Have three Major Groups Thallophytes Bryophytes Pteridophytes
  12. 12. Thallophytes •Simplest form of plants •Have no roots, stems, or leaves
  13. 13. Algae •Have chlorophyll •Can make their own food •They are colored and usually grow in water Example: blue-green, green, red and brown algae.
  14. 14. Fungi
  15. 15. Bryophytes • Simple plants but have more complicated parts than algae and the fungi • Have simple leaves • Do not have true roots and stems • Possesses root-like and stem-like structures • Have chlorophyll and can produce own food Example: moss and liverwort
  16. 16. Bryophytes • Simple plants but have more complicated parts than algae and the fungi • Have simple leaves • Do not have true roots and stems • Possesses root-like and stem-like structures • Have chlorophyll and can produce own food Example: moss and liverwort
  17. 17. Pteridophyte s •Plants that have true roots, stems and leaves but do not have flowers, fruits or seeds •Have chlorophyll and make their own food Example: ferns and club mosses
  18. 18. Nemesio L. Mendiola • Known as the Luther Burband of the Philippines • Was born in Angono, Rizal and studied at the College of Agriculture of the University of the Philippines • Combined the sweetness of Hawaiian pineapple and native pina • His work included rust-resistant coffee, the ambos banana, the
  19. 19. Needs and Uses of Plants
  20. 20. PRACTICE (Who was paying attention?)
  21. 21. Classify the following Plants as Monocots and Dicots:
  22. 22. 1 2 3 4 5
  23. 23. Identify the following Plants as Thallophytes, Bryophytes, or Pteridophytes:
  24. 24. 1 2 3 4 5
  25. 25. 1 2 3 4 5 Monocot Monocot Monocot Dicot Dicot
  26. 26. 6 7 8 9 10
  27. 27.  Plants are autotrophs; they are producers  They harness the energy of the sun in the process called photosynthesis  Plants uses sunlight, water, Carbon dioxide, and minerals from the soil Photosynthesis  Takes place in the leaves  Air and carbon dioxide enters the plant through the stomata  Water and minerals enter
  28. 28. Photosynthesis  The chloroplasts are where photosynthesis occurs which contain chlorophyll  Chlorophyll is the pigment in the plant that absorbs sunlight
  29. 29. Some plants live in a bog
  30. 30. Uses of plants •Plants can be used for medicine
  31. 31. Bark of Cinchona tree • Used for making quinine (a drug used to treat malaria)
  32. 32. Did you know… • About 3.3 billion people – half of the world's population – are at risk of malaria • In 2010, there were about 219 • an estimated 660 000 malaria deaths million malaria cases
  33. 33. Ipecac Plant • Used to treat poison
  34. 34. Foxglove Leaves • Used for heart treatment
  35. 35. Aloe Vera • Used to treat burns • Believed to slow or prevent hairloss
  36. 36. Camphor Tree • Used to relieve pain • Used to relieve itching
  37. 37. Plant Adaptations
  38. 38. Thorns • For protection
  39. 39. Corky, rough, thick barks • For protection
  40. 40. Releases pungent odor • For protection
  41. 41. Oils that cause itchiness • For protection
  42. 42. Can grow on water • Don’t have long roots but have bulb-like structures
  43. 43. Can grow on dry soil • Have thick and fleshy stems
  44. 44. Phototropism • Plants bend towards the light to get the most sunlight
  45. 45. Geotropism • Most roots grow towards the ground
  46. 46. Seed Dispersal • Plants have fruits for easy dispersal (humans/animals) • Some have pods that dry up • Some are easily carried by the wind • Some are carried by animals • Some can be carried by water
  47. 47. Colors !
  48. 48. How can we ensure that there are still plants and animals for our future generation?