Which of the following statements is false ?

Options

A. Cellulose is the most abundant organic compound in the bioshere
B. Cellulose is an unbranched polymer with `beta`-1, 4 glycosidic bonds
C. Rayon and celluphane are chemiscally similar to cellulose xanthte
D. Cellulose can be digested by the herbivores by `beta`-amylase, produced by the glandular cells of their alimentary canal

Answer

To determine which statement is false among the given options, we will analyze each statement step by step.

### Step 1: Analyze the First Statement
**Statement:** "Cellulose is the most abundant organic compound in the biosphere."

**Analysis:**
- Cellulose is indeed the most abundant organic compound found in the biosphere.
- It is a major component of plant cell walls, making up about 33% of the weight of plants.
- Therefore, this statement is **true**.

### Step 2: Analyze the Second Statement
**Statement:** "Cellulose is an unbranched polymer with beta-1,4-glycosidic bonds."

**Analysis:**
- Cellulose is a polysaccharide that consists of long chains of glucose units linked by beta-1,4-glycosidic bonds.
- It is a linear, unbranched polymer.
- Hence, this statement is also **true**.

### Step 3: Analyze the Third Statement
**Statement:** "Rayon and cellophane are chemically similar to cellulose xanthate."

**Analysis:**
- Cellulose xanthate is an intermediate compound used in the production of rayon and cellophane.
- However, rayon and cellophane are not chemically similar to cellulose xanthate; they are products derived from it.
- Therefore, this statement is **false**.

### Step 4: Analyze the Fourth Statement
**Statement:** "Cellulose can be digested by herbivores."

**Analysis:**
- Herbivores, such as cows, can digest cellulose due to the presence of specific enzymes like cellulase and beta-amylase in their digestive systems.
- This allows them to break down plant fibers effectively.
- Thus, this statement is **true**.

### Conclusion
The only false statement among the options provided is the third statement: "Rayon and cellophane are chemically similar to cellulose xanthate."