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CBSE Class 11th: Plant Kingdom - Classification of Plant Kingdom

Apr 2, 2015 12:43 IST

    In this video we are going the learn the topic classification of the Plant Kingdom.

    • The plants have been divided into five classes:
    1. Algae
    2. Bryophytes
    3. Pteridophytes
    4. Gymnosperm
    5. Angiosperm
    • Algae is aquatic in nature
    • The example of unicellular algae is Chlamydomonas
    • The example of colonial form algae is Volvox
    • The example of filamental form algae is Spirogyra
    • The plant body of algae is thalloid (a plant body which can not be differentiated into root, stem, and leaf)
    • Bryophytes include the various mosses and liverworts that are found commonly growing in moist shaded areas in the hills.
    • Bryophytes are known as the amphibians of the plant kingdom because these plants can live in soil but are dependent on water for sexual reproduction
    • In bryophytes, Vascular tissue is absent
    • The plant body of bryophytes is more differentiated than that of algae
    • Body of bryophytes is thallus-like and prostrate or erect, and attached to the substratum
    • Pteridophytes are the first teresterial plants
    • The vascular tissues are very well developed to absorb the water
    • Sporophytic generation is present in pteridophytes that they reproduce by asexual spores
    • Gymnosperm includes pinus and cycus, growing in cold conditions
    • Gymnosperms are said to be flowering plants as they produce flowers having  naked seeds
    • In gymnosperm, ovule is not enclosed in ovary
    • Flowers of gymnosperm are called cones
    • Angiosperms are the highly eveolved group of plants
    • Angiosperms are the flowering plants having seeds which are enclosed within the ovary
    • Vascular tissues are well developed
    • Angiosperms are divided into monocot plants and dicot plants

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