Question

Assertion (A): Mycorrhizae are symbiotic associations between fungi and cyanobacteria.

Reason (R): Cyanobacteria are photosynthetic nitrogen fixers and so increase the efficiency of fungi.

विकल्प

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both statements are false. Mycorrhizae are associations between fungi and plant roots, not fungi and cyanobacteria; cyanobacteria do not define or increase the efficiency of mycorrhizae.