NEET Biology question

Which of the following correctly describes the symbiotic relationship in Azolla-Anabaena association?

(A)Anabaena lives in the leaf cavities of Azolla and fixes nitrogen, benefiting the host fern, which provides it shelter and nutrientsCorrect
(B)Azolla parasitises Anabaena, deriving all its nutrients
(C)Both organisms are harmful to rice crops
(D)Anabaena lives freely in soil with no association with Azolla

Answer: (A)

Solution

Anabaena azollae resides within specialised leaf cavities of the water fern Azolla, fixing atmospheric nitrogen that benefits the host plant, while

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Question ID VK-124759