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    Question

    Azolla – Anabaena is a symbiotic association

    of 
    A Ferm and blue – green algae Correct Answer Incorrect Answer
    B Bryophyta and blue – green algae Correct Answer Incorrect Answer
    C Fungi and blue – green algae Correct Answer Incorrect Answer
    D Nostoc and blue – green algae Correct Answer Incorrect Answer

    Solution

    Azolla is a fern, and Anabaena is a species of cyanobacteria, also known as blue-green algae. They engage in a symbiotic relationship where Anabaena provides nitrogen to Azolla.

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