Mycorrhiza works as

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(C) Mycorrhiza is a symbiotic association between a fungus and the roots of higher plants. In adverse conditions,ectomycorrhiza functions like root ha

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$A$ root hair in adverse condition

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(C) Mycorrhiza is a symbiotic association between a fungus and the roots of higher plants. In adverse conditions,ectomycorrhiza functions like root hairs to facilitate the absorption of water and minerals,as seen in $Pinus$. This is particularly important because many gymnosperms lack root hairs,and the fungal hyphae significantly increase the surface area for absorption.

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