• Distinguishing characters of Pteridophytes by : April 29, 2012

    Pteridophytes: 1. The life cycle shows distinct heteromorphic alternation of generation. 2. Plant body of Sporophyte is dominant phase. 3. Sporophyte is differentiated into true root, ...

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  • Bryophytes by : April 16, 2012

    There are fossil records of blue green algae (Cyanobacteria) living 3000 million years ago and many eukaryotic organisms have existed for more than 1000 million years. However the first organisms to colonize the land, primitive plants ...

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  • Algae by : April 11, 2012

    In Algae the plant body shows no differentiation into root, stem or leaf or true tissues. Such a plant body is called thallus. They do not have vascular tissues. The sex organs of this group of ...

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