Q. Identify the role of lectins in the formation of root nodules in legumes :
(a) Formation of shepherd’s crook.
(b) Recognition of compatible Rhizobium by host.
(c) Formation of peribacterial membrane.
(d) Formation of infection thread.
Solution :
Correct option : B Lectin is a carbohydrate-binding protein that participates in plant defense against predators and pathogens. It is also involved symbiotic interactions between host plants and symbiotic microbes, including mycorrhizal fungi and nitrogen-fixing rhizobia.