The golden nematode of potato caused by Heterodera rostochiensis was introduced in India from –

Given below are two statements: Assertion (A) and Reason (R). Assertion (A): Fungi is the largest microbial biomass in the soil and are very effective decomposers of plant material. Reason (R): Bacteria are the most abundant soil inhabitants and are active in decomposition of organic matter.

Given below are two statements: Statement I: Phytoalexins are high molecular weight compounds. Statement II: Phytoalexins are all phenolic in nature.

Peach leaf curl is caused by a

Stem pitting symptoms in citrus are commonly associated with –

Lyophilization in Plant Pathology is used for –

The transmission of banana bunchy top virus occurs through –

Candidatus liberibacter causes a disease in citrus plants known as –

Black pigment of fungal cell that helps the fungus to prevent damage from UV radiations is –

Red rust of mango is caused by –

What binding components complimentary to the plant lectins present on surface of the pathogens are called?