Multiple choice

Nostoc, a blue-green alga, occurs as an endophyte in ____.

  1. gunnena

  2. anthoceros

  3. cycas

  4. All of the above

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D Correct answer
Explanation

Nostoc is a genus of cyanobacteria that forms symbiotic relationships with various plants. It is found in the coralloid roots of Cycas, the thallus of the liverwort Anthoceros, and the stems of Gunnera (misspelled as gunnena).

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