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 ectotrophic mycorrhiza work as root hair i.e., it enhances absorption of nutrients from soil. The bacteria (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 (Phytophthora palmivora) or bioinsecticide (Bacillust huringiensis).
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