Statement-1 : The heart wood is more durable and resistant to the attack of the micro organisms and insects as compared to the sap wood.
Statement-2: The heart wood contain organic compounds like oils , aromatic substance , gums, resin, tannins and phenols etc.

Options

A. Statement-1 is true, Statement-2 is true , Statement -2 is not the correct explanation of Statement -1.
B. Statement-1 is false, Statement-2 is true
C. Statement-1 is true, Statement-2 is false.
D. Statement-1 is true, Statement-2 is true , Statement-2 is the correct explanation of Statement-1

Answer

To analyze the statements provided, we will break down the information about heartwood and sapwood step by step.

### Step 1: Understanding Heartwood and Sapwood
- **Heartwood** is the central part of the secondary xylem in a tree. It is typically darker and denser than sapwood.
- **Sapwood** is the outer part of the secondary xylem that is active in the conduction of water and nutrients.

**Hint**: Remember that heartwood is located at the center, while sapwood is on the periphery of the tree's xylem.

### Step 2: Evaluating Statement 1
- **Statement 1** claims that heartwood is more durable and resistant to the attack of microorganisms and insects compared to sapwood.
- This is true because heartwood contains compounds that help in resisting decay and insect attacks.

**Hint**: Consider the structural differences and the functions of heartwood and sapwood when evaluating their durability.

### Step 3: Evaluating Statement 2
- **Statement 2** states that heartwood contains organic compounds like oils, aromatic substances, gums, resins, tannins, and phenols.
- This statement is also true. These compounds contribute to the heartwood's durability and resistance to pathogens.

**Hint**: Think about how the presence of these organic compounds in heartwood contributes to its protective qualities.

### Step 4: Analyzing the Relationship Between the Statements
- Since both statements are true, we need to determine if Statement 2 provides a correct explanation for Statement 1.
- Statement 2 explains why heartwood is more durable and resistant, as the organic compounds it contains play a crucial role in this resistance.

**Hint**: Determine if the explanation given in Statement 2 logically supports the claim made in Statement 1.

### Step 5: Conclusion
- Both statements are true, and Statement 2 correctly explains Statement 1. Therefore, the correct answer is that both statements are true, and Statement 2 is the correct explanation for Statement 1.

**Final Answer**: Option D: Statement 1 is true, Statement 2 is true, and Statement 2 is the correct explanation of Statement 1.

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