Given below are certain plant diseases and the pathogens responsible.

Disease	Pathogen Type
A. Panama disease of Banana	i. Bacterial
B. Red ring disease of Coconut	ii. Fungal
C. Malformation of Mango	iii. Nematode
D. Citrus Canker	iv. Viral

Which one of the following options correctly matches the disease with its pathogen?

Correct option is C

Answer: (c) A–(ii), B–(iii), C–(ii), D–(i)

Explanation

Let’s analyze each plant disease and its causative pathogen type:

A. Panama disease of Banana → (ii) Fungal

Caused by Fusarium oxysporum f. sp. cubense.

It is a fungal wilt disease affecting banana plants, causing yellowing and wilting of leaves.
Correct.

B. Red ring disease of Coconut → (iii) Nematode

Caused by Rhadinaphelenchus cocophilus, a nematode parasite.

It produces a characteristic red ring inside the stem, leading to death of the palm.
Correct.

C. Malformation of Mango → (ii) Fungal

Caused by Fusarium moniliforme (syn. Fusarium mangiferae).

Leads to malformed inflorescences and vegetative shoots in mango trees.
Correct.

D. Citrus Canker → (i) Bacterial
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Caused by Xanthomonas axonopodis pv. citri.

Characterized by raised lesions with water-soaked margins on leaves, stems, and fruits.
Correct.