The bulk body of lichen is formed by _______ and the protective body covering is formed by __________.

Options

A. autotrophic, hetertrophic component
B. fungus, algae
C. phycobiont, mycobiont
D. mycobiont, hetertroph component

Answer

To solve the question, "The bulk body of lichen is formed by _______ and the protective body covering is formed by __________," we need to understand the composition of lichen.

### Step-by-Step Solution:

1. **Understanding Lichens**:
- Lichens are a symbiotic association between two main organisms: fungi and algae.
- The algae are known as phycobionts, while the fungi are known as mycobionts.

2. **Identifying the Components**:
- The bulk of the lichen is primarily made up of the fungal component (mycobiont). This is because the fungal part constitutes about 95% of the lichen's body.
- The algae (phycobiont) are responsible for photosynthesis and provide food for the lichen.

3. **Determining the Protective Covering**:
- The protective body covering of the lichen is formed by the fungal component (mycobiont). The fungi provide structure and protection to the lichen.

4. **Filling in the Blanks**:
- Therefore, the bulk body of lichen is formed by **mycobiont (fungi)** and the protective body covering is formed by **mycobiont (fungi)**.

### Final Answer:
The bulk body of lichen is formed by **mycobiont** and the protective body covering is formed by **mycobiont**.

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