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Characteristics of the plant groupsANSWER 2007

By Gordon Webb,2014-09-10 21:08
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    Characteristics of the plant groups

    ANSWER 2007

    Hyper-linked film clips are available in

    MKC campus only

    [Textbook p.90 Activity : Demonstration of a variety of plant types.

     Other organisms : Virus(es), bacterium (bacteria).

    http://www.cccmkc.edu.hk/~kei-kph/Classification/Diversity of plants.htm

    Plants have

    Chlorophyll

    photosynthesis

    Cell wall

    Flowers

    Non-flowering plants

Flowering plants

    reproduction

    seeds

    roots, stems, leaves

    vascular tissues

    support

    transport

    herb(s) .. herbaceous

    woody

    http://www.cccmkc.edu.hk/~kei-kph/Classification/Herb_tree_shrub.htm

    There are two types of flowering plants :

    http://www.cccmkc.edu.hk/~kei-kph/Classification/Dicotyledon.htm http://www.cccmkc.edu.hk/~kei-kph/Classification/Monocotyledon.htm Type of flowering 單子葉植物 雙子葉植物

    plant

    Monocotyledon Dicotyledon

    Number of seed leaf one two

    Venation parallel net

    Type Herb(s) Trees,

    shrubs

    and

    herbs

    Example Grass Broad

    Orchid bean

    Maize Sunflower

    rice Water lily

    Non-flowering plants

    Major types :

    Fungus (Fungi), Alga (Algae), Moss(es)

    Fern(s), Gymnosperm(s)

    FUNGI do not belong to the plant kingdom

    http://www.cccmkc.edu.hk/~kei-kph/Classification/Fungi.htm

     A film to introduce Fungi (Japanese), interesting ! ; No roots, stems or leaves. ; made up of thread-like hypha(e) 菌絲

     (plural : hyphae.)

    ; Non-green : no chlorophyll.

    ; Mostly saprophytic.腐生

    ; Some are parasitic.

    ; Both microscopic and large.

    ; Some can produce useful medicine(s),

     e.g. Penicillium produce penicillin.

     盤尼西林 ; Mushroom(s) are edible.

     EXAMPLES : bread mould,

     Penicillium, yeast 酵母,

    mushroom

Alga(e), many are members of the

    Kingdom Protoctist

     http://www.cccmkc.edu.hk/~kei-kph/Classification/Algae.htm ; Simple plants without roots, stems and leaves.

    ; live in water , i.e. they are aquatic. ; contain photosynthetic pigments. ; are mostly green , but some are brown or red. ; are important producer(s), they are foods for

     animals.

    ; are foods for humans too, e.g. seaweeds 海藻

     are commonly eaten in the East.

     EXAMPLES : Spirogyra, seaweeds (e.g. 紫菜)

Moss(es) 苔蘚

    Moss.htm

    ; are small green plants with simple stems, and leaves but no

     roots.

    ; use simple rhizoid(s) to absorb water and minerals. ; use simple rhizoids to attach themselves to the ground. ; have no vascular tissues

    ; are found in damp (= wet) and shady (= not bright)

    habitats.

    ; form a “ green carpet ” on the forest floor.

Lichens ( ), 地衣 textbook p.130

    \\MKC_vs2\Video\Biological Sciences, 生命科學\Film segments電影片段 (CE and AL)\Lichen (basic fact + urban lichens) (this hyperlink works)

    100 years old lichens lying on the rock beside our reservoir

    http://www.cccmkc.edu.hk/~kei-kph/Struggle_for_life/struggle_for_life_page_1.htm

; are made up of both algae and fungi.

    ; are found on rock surface and tree trunk. ; are killed by a small amount of air pollutant(s). ; are “ biological indicators ” of the degree of

    pollution.

Ferns

    http://www.cccmkc.edu.hk/~kei-kph/Ferns/ferns_page_1.htm ; have true roots stems and leaves.

    ; have finely divided compound leaves.

    ; have their young leaves curled ( = folded up).

    ; produce spore(s) under their leaves

     for reproduction.

    ; Each spore grows to a new plant.

    ; are large because they are supported by

     vascular tissue(s)..

     Vascular tissues have two major functions :

    ; support

    ; transport (of water and mineral salts and

    organic foods)

    ; grow mainly in shady places (damp)

     EXAMPLES :

http://www.cccmkc.edu.hk/~kei-kph/Classification/Gymnosperms.htm

    (The prefix “ gymno ” means naked, think of gymnasium.) ; are large woody plants with true roots, stems and leaves. ; have “ vascular tissues ”.

    ; bear cones which are reproductive bodies that have

     naked seeds.

    ; are evergreen

    ; have needle- shaped leaves.

     EXAMPLES :

     Pine , China fir, cypress柏樹

Other organisms : Virus(es), bacterium (bacteria).

    Activity : Demonstration of a variety of plant types. Servers audio-visual materials.

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