Fungal hyphae forms symbiotic association with the roots of higher plants called mycorrhiza. Mycorrhiza does not help host plant in:

Consider the following four statements (A–D) related to organic farming, and select the correct option stating which ones are true (T) and false (F).

A. The pests are not eradicated but instead are kept at manageable levels by a simple system of checks and balances within a living and vibrant ecosystem.

B. The more variety a landscape has, the less sustainable it is.

C. No need to use chemical insecticides and pesticides.

D. Uses chemical fertilizers containing organic compounds only.