Question

An example of endomycorrhiza is

• A. $Rhizobium$
• B. $Agaricus$
• C. $Glomus$
• D. $Nostoc$

Answer 1

The correct option is C $Glomus$

Introduction to endomycorrhiza
Endomycorrhiza is a type of symbiotic relationship between a plant and root fungi in which the fungal hyphae penetrates deep into the cells (like cortical cells) rather than merely colonising the root surface.

$Glomus$
Glomus is a genus of arbuscular mycorrhizal (AM) fungi which exists in association with plant roots. This is an example of endomycorrhiza.

$Agaricus$
Agaricus is a basidiomycete. It is one of the most commonly cultivated mushrooms used in several delicacies.

$Nostoc$
Nostoc is a free-living cyanobacteria that contains specialised cells called heterocysts which can fix atmospheric nitrogen.

$Rhizobium$
Rhizobium is a symbiotic nitrogen-fixing bacteria that forms association with the roots of higher plants (present inside root nodules).
Final answer
(A) $Glomus$