The following is a storage protein :

Options

A. keratin
B. collagen
C. glutelin
D. haemoglobin

Explanation

To determine which of the given options is a storage protein, we need to understand what a storage protein is and analyze each option accordingly.

### Step-by-Step Solution:

1. **Define Storage Proteins**:
Storage proteins are proteins that serve as a reserve of amino acids and other nutrients. They are non-enzymatic and primarily function to provide essential proteins during periods of growth, such as germination in plants.

2. **Analyze the Options**:
- **Option A: Carotene**:
- Carotene is not a protein; it is a pigment found in plants that is important for photosynthesis and is a precursor to vitamin A. Therefore, it cannot be a storage protein.
- **Option B: Collagen**:
- Collagen is a structural protein that provides support and strength to various tissues in the body, such as skin, bones, and cartilage. It is not a storage protein.
- **Option C: Glutelin**:
- Glutelin is indeed a storage protein found in the endosperm of cereal grains. It serves as a source of amino acids for the developing plant embryo during germination. This makes it a suitable candidate for a storage protein.
- **Option D: Hemoglobin**:
- Hemoglobin is a transport protein found in red blood cells, responsible for carrying oxygen throughout the body. It does not serve as a storage protein.

3. **Conclusion**:
Based on the analysis, the only option that qualifies as a storage protein is **Option C: Glutelin**.

### Final Answer:
The following is a storage protein: **Option C: Glutelin**.

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