Statement I: Cellulose is not diagested by human beings.
Statement II: Cellulose is a polymer of `beta-D-flucose.

Options

A. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-1
B. STATEMENT-1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-1
C. STATEMENT-1 is true, STATEMENT-2 is false
D. STATEMENT-1 is false, STATEMENT-2 is true

Answer

To solve the question, we need to analyze both statements regarding cellulose.

### Step 1: Evaluate Statement I
- **Statement I**: "Cellulose is not digested by human beings."
- **Explanation**: Human beings lack the necessary enzyme (cellulase) to break down cellulose into its monomeric units (glucose). Therefore, this statement is **true**.

### Step 2: Evaluate Statement II
- **Statement II**: "Cellulose is a polymer of beta-D-glucose."
- **Explanation**: Cellulose is indeed a polymer made up of beta-D-glucose units. The glucose units are linked together by beta-1,4-glycosidic bonds, forming long chains. Therefore, this statement is also **true**.

### Step 3: Determine the Relationship Between the Statements
- While both statements are true, Statement II does not provide a correct explanation for Statement I. Statement I is about the inability to digest cellulose, while Statement II describes its structure.

### Conclusion
- Both statements are true, but Statement II is not a correct explanation for Statement I. Thus, the correct option is **B**: Both statements are true, but Statement II is not the correct explanation for Statement I.

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