Porous and hard wood plants belong to

Options

A. gymonosperms
B. moncots
C. dicots
D. trachephytes

Answer

**Step-by-Step Solution:**

1. **Understanding Types of Wood:**
- There are two main types of wood in plants: porous (hardwood) and non-porous (softwood).
- Porous wood is characterized by having a high percentage of xylem vessels, while non-porous wood has a high percentage of tracheids.

2. **Characteristics of Porous Wood:**
- In porous wood, xylem vessels make up about 90-95% of the wood structure.
- The lumen (the hollow part) of these vessels is broad, allowing for efficient water transport.
- Additionally, porous wood contains a large amount of xylem fibers, which contribute to the strength and durability of the wood.

3. **Characteristics of Non-Porous Wood:**
- In non-porous wood, tracheids constitute about 90-95% of the wood structure.
- The lumen in non-porous wood is narrow, which can limit water transport efficiency compared to porous wood.
- Non-porous wood contains a smaller amount of xylem fibers.

4. **Classification of Plants:**
- Porous (hardwood) plants are primarily found in angiosperms, specifically in dicots.
- Non-porous (softwood) plants are mainly found in gymnosperms and monocots.

5. **Identifying the Correct Option:**
- Given the options: gymnosperms, monocots, dicots, and tracheophytes, the correct answer is dicots.
- Therefore, porous and hardwood plants belong to the group of dicots.

**Final Answer:**
Porous and hard wood plants belong to **dicots**.

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