Name the causative micro-organisms of the following plant diseases :

(a) Rust of wheat (b) Citrus canker (c) Yellow vein mosaic of bhindi (Okra)

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Solution

Part (a): Rust of wheat is the disease that damages the wheat grains due to infection caused by fungi.
Part (b): Citrus canker is a bacterial disease that affects the citrus plants and fruits.
Part (c): Yellow vein mosaic of bhindi is caused by a viral pathogen.

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What is the causative agent of the following diseases?

(a) Rust of wheat (b) Citrus canker (c) Yellow vein mosaic of bhindi (Okra)

\begin{matrix} Disease & Plant A. & Rust of wheat & 1. & Okra B. & Yellow vein mosaic & 2. & Lemon C. & Citrus canker & 3. & Barley \end{matrix}

\begin{matrix} Column 1 & Column 2 a. Citrus canker & i. Fungi b. Rust of wheat & ii. Bacteria c. Yellow vein mosaic & iii. Virus \end{matrix}