A fungus which requires only one single host for completion of its life cycle is called

Options

A. Heteroecious
B. Autoecious
C. Heterothallism
D. Heterosporous.

Answer

To answer the question, "A fungus which requires only one single host for completion of its life cycle is called," follow these steps:

### Step 1: Understand the Question
The question is asking for a specific term that describes a type of fungus based on its life cycle requirements.

**Hint:** Focus on the relationship between the fungus and its host.

### Step 2: Analyze the Options
The options provided are:
1. Heteroaceous
2. Autoaceous
3. Heterothallism
4. Heterosporous

**Hint:** Consider what each term means in relation to the number of hosts required.

### Step 3: Define Each Term
- **Heteroaceous:** Refers to fungi that require two different hosts to complete their life cycle.
- **Autoaceous:** Refers to fungi that complete their life cycle using only one host.
- **Heterothallism:** Refers to fungi that require two compatible partners to produce sexual spores.
- **Heterosporous:** Refers to organisms that produce two different types of spores (mega and micro spores).

**Hint:** Identify which term specifically indicates the use of a single host.

### Step 4: Identify the Correct Answer
From the definitions, the term that describes a fungus requiring only one single host for its life cycle is **Autoaceous**.

**Hint:** Recall that the term "auto" often implies "one" or "self."

### Step 5: Provide an Example
An example of an autoaceous fungus is the rust fungi, which commonly attack plants like bean plants, coffee plants, and sugar cane.

**Hint:** Think about common plant diseases caused by fungi to reinforce your understanding.

### Final Answer
A fungus which requires only one single host for completion of its life cycle is called **Autoaceous**.