Mycorrhiza does not help the host plant in

1. enhancing its phosphorus uptake capacity

2. increasing its tolerance to drought

3. enhancing its resistance to root pathogens

4. increasing its resistance to insects

Fungi form symbiotic association with the roots of higher plants called mycorrhiza

(VAM) e.g, Glomus.

The fungal hyphae symbiont in these associations absorb phosphorus from soil and

passes it to the plant. Plants having such associations show other benefits also, such

as resistance to roat-borne pathogens, tolerance to salinity and draught, and an overall

increase in plant growth and development, Mycorthiza does not help the host plant in

increasing its resistance to insects.

Page 188, XII NCERT