Coralloid roots are the characteristics of `:`

Options

A. Leguminous plants
B. Cycas
C. Ferns
D. Mosses

Answer

**Step-by-Step Solution:**

1. **Understanding Coralloid Roots:**
- Coralloid roots are specialized roots that are typically found in certain plants. They are characterized by their coral-like appearance and are often associated with specific functions, such as nitrogen fixation.

2. **Identifying the Plant Group:**
- The question asks which group of plants has coralloid roots. To answer this, we need to identify the plant group that is known for having these specialized roots.

3. **Recognizing Gymnosperms:**
- Coralloid roots are primarily associated with gymnosperms. Gymnosperms are a group of seed-producing plants that have seeds that are not enclosed in an ovary (hence the term "gymnosperm," meaning "naked seeds").

4. **Examples of Gymnosperms:**
- A notable example of a gymnosperm that features coralloid roots is Cycas. Cycas is a genus of cycad, which is a type of gymnosperm. These plants have smooth, specialized roots that can house nitrogen-fixing cyanobacteria.

5. **Excluding Other Options:**
- The other options provided in the question, such as leguminous plants, pteridophytes, and mosses, do not have coralloid roots. Leguminous plants typically form symbiotic relationships with Rhizobium, while pteridophytes and mosses belong to different plant groups that do not exhibit this root structure.

6. **Conclusion:**
- Therefore, the correct answer to the question is that coralloid roots are characteristic of gymnosperms, specifically exemplified by Cycas.

**Final Answer:**
Coralloid roots are characteristics of Gymnosperms (e.g., Cycas).

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