Which of the following gymnospermic coralloid | vedclass

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(B) Coralloid roots are specialized roots found in the genus $Cycas$. These roots are apogeotropic (grow upwards) and dichotomously branched. In the c

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Cycas

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(B) Coralloid roots are specialized roots found in the genus $Cycas$. These roots are apogeotropic (grow upwards) and dichotomously branched. In the cortex of these roots,there is a specific region known as the algal zone. This algal zone provides a habitat for symbiotic nitrogen-fixing cyanobacteria,such as $Nostoc$ and $Anabaena$,which help in the fixation of atmospheric nitrogen.

Which of the following gymnospermic coralloid roots are associated with $N_{2}$-fixing cyanobacteria?

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