NEET 2013 Biology question

Besides paddy fields, cyanobacteria are also found inside vegetative part of :

(1)Pinus
(2)CycasCorrect
(3)Equisetum
(4)Psilotum

Answer: (2)

Solution

In Cycas the specialised negatively geotropic, coralloid roots (apogeotropic roots) growing above the soil contain symbiotic cyanobacteria (Anabaena, Nostoc), which fix

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Question ID VK-091388