Question

Match the plant diseases with their respective causative agent.
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> $$\begin{array}{cc}\text{Plant diseases}& \text{Causative agent}\\ \text{a. Citrus canker}& \text{i. Virus}\\ \text{b. Rust of wheat}& \text{ii. Bacteria}\\ \text{c. Yellow vein mosaic}& \text{iii. Fungi}\end{array}$$

• A. a - ­ii, b­ - iii, c - i
• B. a - iii, b - ­ii, c - i
• C. a - ­ii, b - ­i, c­ - iii
• D. a­ - i, b­ - ii, c - i­ii

Answer 1

The correct option is A a - ­ii, b­ - iii, c - i

Citrus canker is a citrus disease caused by the bacterium Xanthomonas citri.
Rust of wheat is caused by the fungus Puccinia triticina.
Yellow vein mosaic is a viral disease caused by the virus Begomovirus. The carrier of the disease is the whitefly.