Peripheral region of secondary xylem , which is light in color and Which caused conduction of water and minerals is known as

Options

A. Heartwood (duramen )
B. Sapwood (alburnum )
C. Spring wood
D. Autumn wood

Answer

To solve the question regarding the peripheral region of secondary xylem that is light in color and responsible for the conduction of water and minerals, we can follow these steps:

### Step 1: Understand the Structure of Xylem
The xylem is a type of tissue in vascular plants that is responsible for the transport of water and minerals from the roots to the leaves. It consists of different components, including tracheids, vessel elements, fibers, and parenchyma.

**Hint:** Remember that xylem is divided into two main types: sapwood and hardwood.

### Step 2: Identify the Types of Xylem
Xylem can be categorized into two main types:
- **Sapwood**: The younger, outer layer of xylem that is lighter in color and actively involved in the conduction of water and minerals.
- **Heartwood (or Hardwood)**: The older, inner layer of xylem that is darker in color and primarily serves as structural support, often storing biochemicals.

**Hint:** Focus on the characteristics of sapwood and hardwood to differentiate them.

### Step 3: Analyze the Question
The question specifies that we are looking for the "peripheral region of secondary xylem" that is "light in color" and "causes conduction of water and minerals."

**Hint:** The keywords "light in color" and "conduction" are crucial in identifying the correct answer.

### Step 4: Evaluate the Options
1. **Hardwood**: Typically dark in color and not primarily involved in conduction.
2. **Sapwood**: Light in color and responsible for the conduction of water and minerals.
3. **Springwood**: Part of the growth rings, not specifically linked to the conduction of water and minerals.
4. **Autumn wood**: Also part of growth rings, primarily for protection.

**Hint:** Eliminate options that do not match the description provided in the question.

### Step 5: Conclude the Answer
Based on the analysis, the correct answer is **Sapwood**, as it is the peripheral region of secondary xylem that is light in color and responsible for the conduction of water and minerals.

**Final Answer:** Sapwood