Adventitious roots are

Options

A. those arising from any part of plant other than radicle
B. found only in monocots
C. found in bryophytes also
D. all of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Adventitious Roots:**
- Adventitious roots are defined as roots that arise from any part of the plant other than the radical (the embryonic root). This means they can develop from stems, leaves, or other parts of the plant.

2. **Types of Root Systems:**
- There are three main types of root systems:
- **Taproot System:** Characterized by a primary root that develops from the radical and persists throughout the plant's life.
- **Fibrous Root System:** Commonly found in monocots, where the primary root is short-lived and replaced by numerous fibrous roots that emerge from the base of the stem.
- **Adventitious Root System:** These roots can be found in both monocots and dicots, growing from various parts of the plant.

3. **Examples of Adventitious Roots:**
- Adventitious roots can be found in plants like banyan trees (a dicot) and asparagus (a monocot). This shows that they are not exclusive to one type of plant.

4. **Clarifying the Options:**
- **Option A:** "Arising from any part of the plant other than radical" - This is correct as it aligns with the definition of adventitious roots.
- **Option B:** "Found only in monocots" - This is incorrect because adventitious roots are also found in some dicots.
- **Option C:** "Found in bryophytes also" - This is incorrect since bryophytes do not have true roots; they have root-like structures called rhizoids.
- **Option D:** "All of the above" - This is incorrect as not all previous statements are true.

5. **Conclusion:**
- The correct answer is that adventitious roots are those that arise from any part of the plant other than the radical.

**Final Answer:**
Adventitious roots are those arising from any part of the plant other than the radical.

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