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  1. The individual chain of cells or filament in the colony of Nostoc is known as

    2. A.

     Trichome
    B.

     Heterocyst
    C.

     Hormogonia
    D.

     None of the above

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    Answer : Option A

    Explanation :

    If you look at Nostoc structure under a microscope, you will see thread-like filaments, called trichomes. Each trichome is really a chain of round or bead-like cells that lack a nucleus.

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