Question
The blue green alga Anabaena lives in the leaves of
Azolla, a freshwater fern, forming which of the following relationships?Solution
The blue-green alga Anabaena lives in the leaves of Azolla, a freshwater fern, forming a symbiotic relationship. In this relationship, Anabaena provides nitrogen to Azolla through nitrogen fixation, while Azolla offers a protected environment and nutrients to the alga. This mutualistic association benefits both organisms and is particularly significant in rice cultivation, where Azolla is used as a natural fertilizer.
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