Lichens are symbiotic associations of an algal and fungal component . Respectively, they are termed as

Options

A. algobiont and mycobiont .
B. algobiont and fungibiont.
C. Mycobiont and phycobiont.
D. Phycobiont and mycobiont .

Answer

To solve the question regarding the symbiotic associations in lichens, we need to identify the correct terms for the algal and fungal components. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Components of Lichens
Lichens are formed by a symbiotic relationship between two main components: an alga and a fungus.

### Step 2: Identify the Algal Component
The algal component in lichens is responsible for photosynthesis, which produces food. This component is specifically referred to as the **phycobiont**.

### Step 3: Identify the Fungal Component
The fungal component in lichens provides structure and protection to the algal cells. This component is known as the **mycobiont**.

### Step 4: Match Terms with Options
Now, we need to match these terms with the options provided in the question:
- **Phycobiont** is the algal component.
- **Mycobiont** is the fungal component.

### Step 5: Select the Correct Option
Among the options provided, the correct pairing is **phycobiont** for the algal component and **mycobiont** for the fungal component. Therefore, the correct answer is:

**Option 4: Phycobiont and Mycobiont.**

### Final Answer
The correct terms for the algal and fungal components of lichens are **phycobiont** (algal component) and **mycobiont** (fungal component).

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