Question

The carbohydrate used as a storage molecule in plants is

• A. Starch
• B. Glycogen
• C. Cellulose
• D. Glucose

Hint:

Starch is a polysaccharide that is used by plants to store energy, while cellulose provides structural support in plant cells.

Answer 1

The Correct Option is A

Plants store carbohydrates in the form of starch, which is a polysaccharide composed of glucose units. This is the primary storage form of energy for plants.
Step 1: Function of starch.
Starch serves as the main energy reserve in plants. It is stored in organs such as roots, tubers, and seeds and can be converted back into glucose when needed.
Step 2: Evaluate the options.
- Option 1: Starch: Correct, as starch is the storage carbohydrate in plants.
- Option 2: Glycogen: Glycogen is the storage form of glucose in animals, not in plants.
- Option 3: Cellulose: Cellulose is the structural carbohydrate in plant cell walls, not a storage form.
- Option 4: Glucose: Glucose is used as an immediate energy source, not a storage form in plants.
Step 3: Conclusion.
The correct storage carbohydrate in plants is starch.
Final Answer: \[ \boxed{\text{The correct answer is starch.}} \]