Find incorrect statements.
`(i)` Karyogamy and meiosis take place in the basidium in club fungi
`(ii)`Basidiospores are always exogenous
`(iii)` Neurospora is never used in biochemical work
`(iv)` Yeast name is Saccharomyces

Options

A. `(iii) & (iv)`
B. `(ii) & (iii)`
C. `(i)` only
D. `(iii)` only

Answer

To determine the incorrect statements from the given options, we will analyze each statement one by one:

### Step 1: Analyze Statement (i)
**Statement (i)**: Karyogamy and meiosis take place in the basidium in club fungi.

- **Explanation**: Karyogamy is the fusion of two haploid nuclei, and it does occur in the basidium of club fungi (Basidiomycetes). Following karyogamy, meiosis occurs, resulting in the formation of basidiospores.
- **Conclusion**: This statement is **correct**.

### Step 2: Analyze Statement (ii)
**Statement (ii)**: Basidiospores are always exogenous.

- **Explanation**: Basidiospores are indeed produced externally on the basidium, which means they are exogenous.
- **Conclusion**: This statement is **correct**.

### Step 3: Analyze Statement (iii)
**Statement (iii)**: Neurospora is never used in biochemical work.

- **Explanation**: This statement is incorrect because Neurospora, particularly Neurospora crassa, is widely used as a model organism in genetic and biochemical studies. It has played a significant role in the understanding of genetic recombination and metabolic pathways.
- **Conclusion**: This statement is **incorrect**.

### Step 4: Analyze Statement (iv)
**Statement (iv)**: Yeast name is Saccharomyces.

- **Explanation**: Saccharomyces is indeed a genus of yeast, commonly known for its role in baking and brewing. The most well-known species is Saccharomyces cerevisiae.
- **Conclusion**: This statement is **correct**.

### Final Conclusion
The only incorrect statement among the options provided is **Statement (iii)**: Neurospora is never used in biochemical work.

### Summary of Incorrect Statements
- The incorrect statement is: **(iii)** Neurospora is never used in biochemical work.

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