Which of the following is incorrect about glycogen ?

Options

A. It is a stored form of glucose in animals.
B. In glycogen , the right end is reducing and the left end is non - reducing .
C. It is a branched polymer of glucose.
D. It is a stored form of glucose in plants

Answer

To determine which statement about glycogen is incorrect, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Identify the Stored Form of Glucose in Animals**:
- Glycogen is indeed the stored form of glucose in animals. It is primarily found in the liver and muscle tissues.
- **Conclusion**: This statement is **correct**.

2. **Examine the Reducing and Non-Reducing Ends**:
- Glycogen has a structure where one end is a reducing end and the other is a non-reducing end. The reducing end can participate in oxidation-reduction reactions, while the non-reducing end cannot.
- **Conclusion**: This statement is **correct**.

3. **Check the Structure of Glycogen**:
- Glycogen is a branched polymer of glucose. Its structure consists of glucose units linked by α(1→4) glycosidic bonds, with branches formed by α(1→6) glycosidic bonds.
- **Conclusion**: This statement is **correct**.

4. **Determine the Stored Form of Glucose in Plants**:
- In plants, the stored form of glucose is starch, not glycogen. Starch is the primary storage carbohydrate in plants.
- **Conclusion**: This statement is **incorrect**.

### Final Answer:
The incorrect statement about glycogen is that it is the stored form of glucose in plants. The correct answer is option 4.

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