Which one is an INCORRECTLY matched pair ?

Options

A. Phycomycetes - Mucor, Albugo
B. Ascomycetes - Penicillium , Aspergillus
C. Basidiomycetes - Puccinia , Agaricus
D. Deuteromycetes - Ustilago , Colletotrichum

Answer

To solve the question of which pair is incorrectly matched, we will analyze each of the given pairs of fungi and their classifications step by step.

### Step 1: Analyze the first pair - Phycomycetes, Mucor, and Albugo
- **Phycomycetes**: This class includes fungi that are primarily aquatic and can be found on decaying wood.
- **Examples**: Mucor and Albugo are both examples of Phycomycetes.
- **Mucor**: A common mold found in soil and decaying matter.
- **Albugo**: A parasitic fungus that affects mustard plants.
- **Conclusion**: This pair is correctly matched.

### Step 2: Analyze the second pair - Ascomycetes, Penicillium, and Aspergillus
- **Ascomycetes**: Known as sac fungi, they are characterized by the formation of ascospores.
- **Examples**: Penicillium and Aspergillus are both well-known Ascomycetes.
- **Penicillium**: Used in the production of antibiotics (e.g., penicillin).
- **Aspergillus**: A genus of fungi that includes species used in fermentation and food production.
- **Conclusion**: This pair is correctly matched.

### Step 3: Analyze the third pair - Basidiomycetes, Puccinia, and Agaricus
- **Basidiomycetes**: This class includes fungi that produce basidiospores.
- **Examples**: Puccinia and Agaricus are both examples of Basidiomycetes.
- **Puccinia**: A genus of fungi known for causing rust diseases in plants.
- **Agaricus**: Includes edible mushrooms, such as the common button mushroom.
- **Conclusion**: This pair is correctly matched.

### Step 4: Analyze the fourth pair - Deuteromycetes, Astiligo, and Colletotrichum
- **Deuteromycetes**: Also known as imperfect fungi, they are characterized by the absence of a known sexual reproduction stage.
- **Examples**: Astiligo and Colletotrichum are both examples of Deuteromycetes.
- **Astiligo**: This is actually a misclassification; it is not a Deuteromycete but is often associated with Basidiomycetes.
- **Colletotrichum**: A genus of fungi known for causing anthracnose diseases in plants.
- **Conclusion**: This pair is incorrectly matched because Astiligo does not belong to Deuteromycetes.

### Final Answer
The incorrectly matched pair is: **Deuteromycetes, Astiligo, and Colletotrichum**.

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