Question

The internal (cellular) energy reserve in autotrophs is

• A. glycogen
• B. protein
• C. starch
• D. fatty acid

Answer 1

The correct option is C

starch

The correct option is C.

Explanation for correct option:

• Autotrophs such as green plants can synthesize their own food via photosynthesis.
• Plants synthesise glucose and store it inside their cells in the form of starch.
• Starch is composed of several glucose molecules connected to each other.
• Starch is ingested by humans via food.

Explanation for incorrect options:

Option A:

• Glycogen is the cellular energy reserve in heterotrophs.
• Glycogen is also called animal starch.

Option B:

• Protein is one of the important components of essential nutrition.
• Proteins serve a structural role in animals as well as plants.

Option D:

• Fatty acids are the building blocks of fats.
• During the process of fat digestion, fatty acids are produced.

Hence, the internal (cellular) energy reserve in autotrophs is starch.