Most of the lichens consist of

Options

A. Green algae and ascomycetes
B. Brown algae and higher plant
C. Blue green algae and basidiomycetes
D. Red algae and ascomycetes

Answer

**Step-by-Step Solution:**

1. **Understanding Lichens**: Begin by defining what lichens are. Lichens are a symbiotic association between two organisms: a fungus and an alga (or cyanobacteria). This mutual relationship allows both organisms to benefit from each other.

2. **Components of Lichens**: Identify the two main components of lichens:
- **Fungal Component**: This is known as the mycobiont. The fungus provides structure, protection, and helps in reproduction.
- **Algal Component**: This is known as the phycobiont. The algae (or cyanobacteria) perform photosynthesis, producing food that benefits the fungal partner.

3. **Photosynthesis and Food Production**: Understand the role of the algal component in food production. The algal component, usually green algae, contains chlorophyll, which is essential for photosynthesis. This process produces organic compounds that serve as food for the fungal partner.

4. **Fungal Component Characteristics**: Recognize that the fungal partner in lichens is often from the group called Ascomycetes (or Ecomycetes). This group is commonly associated with lichen formation.

5. **Conclusion**: Based on the understanding of the components of lichens, conclude that most lichens consist of green algae and ecomycetes (fungi). Therefore, the correct answer to the question is that lichens primarily consist of these two components.

**Final Answer**: Most lichens consist of green algae and ecomycetes.

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