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Principle of Classification

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Principle of Classification Variety of Life – PowerPoint PPT presentation

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Title: Principle of Classification


1
Principle of Classification
  • Variety of Life

2
Evolutionary relation and Natural Classification
3
Hierachy in classification I
4
Hierachy in Classification II
5
Traditional Classification of Plants and Animals
  • Animal Kingdom
  • Invertebrates
  • Vertebrates
  • Plant Kingdom
  • Non-flowering plant
  • Flowering plant

6
Dilemma for Classification
7
The Five Kingdoms
8
Cellular vs Non-cellular
9
Viruses
  • Living or nonliving?
  • Primitive or Advanced?

10
Diversity in Viruses
11
Bacteriophage
  • Parasite of bacteria

12
Life cycles of bacteriophage
13
Life Cycle of Virus
14
Prokaryotes vs Eukaryotes
15
Prokaryotic structures
16
Prokaryotes bacteria Cyanobacteria / Blue
green algae
17
Bacterial structure
  • Bacteria are the oldest life forms on earth,
    dating back about 3.8 billion years.

18
Bacterial flagellum
19
Beneficial Bacteria
  • - Cheese making
  • - Yogurt making
  • - bifido in GI tract

20
Harmful bacteria
  • - Listeria in milk products
  • - Salmonella in meat

21
Cyanobacteria
22
Binary fission in bacteria
  • The cell wall and membrane are in red, the
    bacterial chromosome in blue, the cytoplasm in
    light green. The yellow dot represents a point of
    attachment of the chromosome to the cell
    membrane.

23
  • Typically bacterial chromosomes consist of a
    single loop of DNA, often called circular DNA.
    Eukaryotes have a linear DNA molecule.
  • Duplication of the DNA. bacterial chromosome
    replicates leading to two identical chromosomes
    The cell begins to divide, each cell with an
    identical chromosome.
  • The result is two identical daughter cells.
  • Rate of multiplication in Bacteria. Consider a
    single bacteria. After 24 hours there would be
    248 or 2.81 x 1014 bacteria. Fortunately
    bacteria rarely are able to sustain this high
    rate of multiplication for long. WHY?

24
Protozoa_Amoeba
25
Pseudopodium
26
Paramecium
27
Plasmodium_Malaria I
28
Plasmodium_Malaria II
29
Plasmodium_Malaria III
30
Algae
31
Algae_unicellular
32
Algae_filamentous_spirogyra
33
Algae_multicellular
34
Brown algae - Fucus
35
Thallus of a Brown algae
36
Thallus of a Red algae
37
Fungus_Bread moulds
38
Fungus_Moulds_penicillium
39
Mushroom_gill fungus
40
Fungus
41
Sac Fungus
42
Giant MUSHROOM!
43
Plant or animal ?
44
Morels
45
A fungus from Tai Po Kau
46
A thousand-year-old ?
47
Ghosts umbrella
48
Fungus from Sai Kung
49
Lichen
50
Lichen
51
Lichen
52
Lichen
53
Lichen_internal structure
54
Mosses and allies
55
Moss plants with capsule
56
Moss plants with capsule
57
Moss plant
58
Moss life cycle I
59
Moss life cycle II
60
Liverwort - Moss related
61
Tongue fern - Pyrrosia
62
Ferns
63
Ferns
64
Ferns
65
Fronds unrolling
66
Tree Fern
67
Tree fern scar
68
Pinnate leaves
69
Fern sori on underside of frond
70
Fern sori on underside of frond
71
Fern - sori on underside of frond
72
Fern - sori on underside of frond
73
Fern life cycle 1
74
Fern life cycle 2
75
Fern life cycle 3
76
Fern life cycle 4
77
ferngametophyte
78
Fern Life cycle
79
Golden sand from the sea?
80
Ferns allies
81
Ferns allies
82
Alternation of generations
83
Alternation of generations
84
Gymnosperms
85
Conifers- temperate forest
86
Pine
87
Huang Shan
88
Pine_Huang Shan
89
Pine leaf
90
Gingko
91
Gingko
92
Gingko tree - a living fossil
93
Cyad- a gymnosperm and a male cone
94
Cyad a female cone
95
Cone of a gymnosperm
96
Worlds biggest Organism California redwood
97
Gymnosperm life cycle
98
Male and Female cone
99
Bauhinia
100
Lily a monocot
101
A ladys slipper - an orchid
102
Bamboo orchid
103
Camellia
104
Camphor tree
105
A salt resistant tree
106
Petals or leaves
107
Water hyacinth An aquatic flowering plant
108
Water hyacinth a nuisance ?
109
Well differentiated plant bodies of angiosperm
110
Monocot characteristics
111
Dicot characteristics
112
Floral structure
113
Development of Pollen grain
114
Anther and pollen grains
115
Life cycle of Flowering plant
116
Fertilization_ internal independent of external
water
117
Life cycle in Flowering plant
118
Seeds Dicot vs monocot
119
A bean seedling
120
Fruit can assist dispersal- coconut
121
A climber- purple Granadilla
122
The Big Four poisonous plants in HK
123
The Big Four poisonous plants in HK
124
The Big Four poisonous plants in HK
125
The Big Four poisonous plants in HK
126
The Big Four poisonous plants in HK
127
Not a tomato!
128
Mango from the sea?
129
Alocasia a understory plant
130
A climber Creeping Psychotria
131
Fruit of Incense tree
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