NEET2019BotanyBiological ClassificationActual

Identify the diagram of heterocyst.

Correct answer

Step-by-step solution

The diagram in option (a) is heterocyst. These are specialised nitrogen- fixing cells formed during nitrogen starvation by some filamentous cyanobacteria such as Nostoc shown in option (a). Hetrocyst create microanaerobic environment for functioning of nitrogenase enzyme around the cell that help in fixation of free atomospheric nitrogen. The organisms in other option are as follows 1. Euglena 2. Paramecium 3. Mushroom (Agaricus)

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