Rust and smut disease of fungi are caused by fungi belonging to

Options

A. `{:("Rust","Smut"),("Puccinia","Ustilago"):}`Ascomycetes
B. `{:("Rust","Smut"),("Puccinia","Ustilago"):}` Basidiomycetes
C. `{:("Smut","Rust"),("Puccinia","Ustilago"):}` Basidiomycetes
D. `{:("Smut","Rust"),("Puccinia","Ustilago"):}` Ascomycetes

Answer

To solve the question regarding the causative organisms of rust and smut diseases in fungi, let's break it down step by step:

### Step 1: Identify the Diseases
- Rust and smut diseases are fungal diseases that affect various plants.

### Step 2: Identify the Causative Organisms
- Rust diseases are primarily caused by fungi belonging to the genus **Puccinia**.
- Smut diseases are caused by fungi belonging to the genus **Ustilago**.

### Step 3: Classify the Fungi
- Both **Puccinia** and **Ustilago** belong to the class **Basidiomycetes**.
- Basidiomycetes are known for producing spores on a structure called a basidium.

### Step 4: Confirm the Classification
- The classification of fungi includes four main groups:
1. **Ascomycetes**
2. **Basidiomycetes**
3. **Phycomycetes**
4. **Deuteromycetes**
- Since both rust and smut fungi are classified under Basidiomycetes, this confirms our answer.

### Conclusion
- Therefore, the correct answer to the question is that rust and smut diseases are caused by fungi belonging to the group **Basidiomycetes**.

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