The production of asexual spores in Phycomycetes and Ascomycetes respectively

Options

A. Endogenously and exogenously
B. Exogenously and endogenously
C. Exogenously and exogenously
D. Endogenously and endogenously

Answer

To answer the question regarding the production of asexual spores in Phycomycetes and Ascomycetes, we can break it down into the following steps:

### Step 1: Understand Phycomycetes
- In Phycomycetes, the asexual spores are known as **zoospores**.
- These spores are produced **endogenously**, meaning they are formed within a specialized structure called a **sporangium**.

### Step 2: Understand Ascomycetes
- In Ascomycetes, the asexual spores are referred to as **conidia**.
- These conidia are produced **exogenously**, which means they are formed outside of the parent structure on specialized hyphae known as **conidiophores**.

### Step 3: Compare the Two Groups
- Thus, we can summarize that:
- Phycomycetes produce asexual spores (zoospores) **endogenously**.
- Ascomycetes produce asexual spores (conidia) **exogenously**.

### Step 4: Identify the Correct Option
- Based on the above information, the correct answer to the question is:
- **Endogenously (for Phycomycetes) and Exogenously (for Ascomycetes)**.

### Final Answer:
- The production of asexual spores in Phycomycetes is **endogenous**, while in Ascomycetes it is **exogenous**.

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