Cladoina rangiferina is

Options

A. Lichen
B. Alga
C. Fungus
D. Angiosperm

Answer

**Step-by-Step Solution:**

1. **Identify Cladonia rangiferina**: The question asks about Cladonia rangiferina. To answer this, we need to recognize what Cladonia rangiferina is classified as.

2. **Understand the Options**: The options provided are:
- (1) Lichen
- (2) Algae
- (3) Fungus
- (4) Angiosperm

3. **Research Cladonia**: Cladonia is a genus that is known to include various types of lichens. Specifically, Cladonia rangiferina is commonly referred to as reindeer lichen.

4. **Define Lichens**: Lichens are a symbiotic association between fungi and algae. In this relationship, the fungus provides a protective structure and habitat, while the algae perform photosynthesis to produce food.

5. **Evaluate the Options**:
- Option (1) Lichen: This is correct as Cladonia rangiferina is indeed a lichen.
- Option (2) Algae: Incorrect, as Cladonia rangiferina is not an algae.
- Option (3) Fungus: Incorrect, as it is not solely a fungus but a lichen which is a combination of fungus and algae.
- Option (4) Angiosperm: Incorrect, as angiosperms are flowering plants, which does not apply to Cladonia rangiferina.

6. **Conclusion**: Based on the above evaluations, the correct answer is option (1) Lichen.

**Final Answer**: Cladonia rangiferina is a lichen.

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