In lichen, the role of mycobiont is

Options

A. Provides food for the alga
B. Provides protection, anchorage and absorption for the alga
C. Releases oxygen for the alga
D. Fixes the atmospheric nitrogen for the alga

Answer

To answer the question about the role of mycobiont in lichen, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding Lichens**:
- Lichens are a symbiotic association between fungi (mycobiont) and algae (phycobiont). In this relationship, both partners benefit from each other.

**Hint**: Remember that lichens consist of two main components: fungi and algae.

2. **Roles of the Components**:
- The algal component (phycobiont) is typically autotrophic, meaning it can produce its own food through photosynthesis.
- The fungal component (mycobiont) is heterotrophic and cannot produce its own food.

**Hint**: Identify which component is responsible for photosynthesis and which one absorbs nutrients.

3. **Function of Mycobiont**:
- The mycobiont provides several essential functions:
- **Protection**: It offers a protective environment for the algae, shielding it from harsh environmental conditions.
- **Shelter**: The fungal structure provides a habitat for the algae.
- **Nutrient Absorption**: The mycobiont helps in the absorption of water and minerals from the environment, which are then made available to the algal partner.

**Hint**: Focus on the supportive and protective roles of the mycobiont.

4. **Eliminating Incorrect Options**:
- The mycobiont does not provide food for the algae; instead, it is the algae that produce food through photosynthesis.
- It does not release oxygen for the algae; that is a function of the algae during photosynthesis.
- It does not fix atmospheric nitrogen for the algae; this is typically done by certain bacteria, not fungi.

**Hint**: Consider what each component contributes and eliminate options that do not align with the mycobiont's role.

5. **Conclusion**:
- The primary role of the mycobiont in lichen is to provide protection and support to the algal component, facilitating a beneficial relationship.

**Hint**: Summarize the main functions of the mycobiont to solidify your understanding.

### Final Answer:
The role of mycobiont in lichen is to provide protection, shelter, and encourage absorption of nutrients for the algae.