A) it fixes atmospheric nitrogen
B) it enhances absorption of nutrients from soil
C) it kills pathogens
D) it provides resistance against drought
Correct Answer: B
Solution :
Mycorrhiza is a symbiotic association of fungi with the roots of higher plants. The ectotrophicmycorrhiza work as root hair i.e., it enhences absorption of nutrients from soil. Thebacteria (Rhizobium) forms nodules in the roots of leguminous plant and fixes the atmospheric nitrogen. The living organisms or their extracts which kill the pathogen are called biopesticide. These may be bioherbicide (Phytophthorapalmivora) or bioinsecticide (Bacillus thuringiensis).
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