Puccinia forms uredia and

Options

A. Telia on wheat leaves
B. Aecia on barberry leaves
C. Pycnia on barberry leaves
D. Aecia on wheat leaves

Answer

To solve the question "Puccinia forms uredia and...", we need to understand the life cycle of the Puccinia fungus and the types of spores it produces. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Identify the Organism**: Puccinia is a genus of fungi known for causing diseases in cereal crops, particularly wheat.

2. **Understand the Disease**: Puccinia species, such as Puccinia graminis, are responsible for diseases like black rust in wheat. This disease is characterized by the formation of reddish-brown or black pustules on the leaves of the infected plants.

3. **Life Cycle of Puccinia**: The life cycle of Puccinia involves two hosts:
- **Primary Host**: Wheat (or other cereal crops).
- **Secondary Host**: Barberry plant.

4. **Types of Spores Produced**: Puccinia produces five types of spores during its life cycle:
- Urediospores (Uredia)
- Teliospores (Telia)
- Basidiospores (Basidia)
- Pycnidiospores (Pycnia)
- Aeciospores (Aecia)

5. **Location of Spores**:
- Urediospores (Uredia), Teliospores (Telia), and Basidiospores (Basidia) are formed on the primary host (wheat).
- Pycnidiospores (Pycnia) and Aeciospores (Aecia) are formed on the secondary host (barberry).

6. **Conclusion**: Based on the information, the correct answer to the question "Puccinia forms uredia and..." is that it forms Telia on wheat leaves, as both Uredia and Telia are produced on the primary host.

### Final Answer:
Puccinia forms uredia and Telia on wheat leaves.

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