Which one conteins only secondary metabolites

Options

A. Abrin, cellulose, arginine, tyrosine
B. Glycine, gums, serine, diterpenes
C. Carotenoids, phenylalanine, curcumin, rubber
D. Concanavalin-A, morphine, cocaine, vinblastin.

Answer

To determine which option contains only secondary metabolites, we first need to understand what secondary metabolites are.

### Step-by-Step Solution:

1. **Define Secondary Metabolites**:
- Secondary metabolites are organic compounds that are not directly involved in the normal growth, development, or reproduction of an organism. They play a crucial role in plant defense and interaction with the environment.

2. **Identify the Options**:
- The options provided are:
- A) Abrine, Cellulose, Arginine, Tyrosine
- B) Glycine
- C) Diterpenes, Carotenoids, Phenylalanine, Curcumin, Rubber
- D) Concanavalin, Morphine, Codeine, Vinblastine

3. **Analyze Each Option**:
- **Option A**:
- Abrine is a toxin (secondary metabolite), Cellulose is a structural carbohydrate (not a secondary metabolite), Arginine and Tyrosine are amino acids (not secondary metabolites).
- **Conclusion**: Contains non-secondary metabolites.

- **Option B**:
- Glycine is an amino acid (not a secondary metabolite).
- **Conclusion**: Contains non-secondary metabolites.

- **Option C**:
- Diterpenes and Carotenoids are secondary metabolites. However, Phenylalanine is an amino acid (not a secondary metabolite), and Curcumin is a secondary metabolite. Rubber is also a secondary metabolite.
- **Conclusion**: Contains non-secondary metabolites.

- **Option D**:
- Concanavalin A is a lectin (secondary metabolite), Morphine and Codeine are alkaloids (secondary metabolites), and Vinblastine is a drug (secondary metabolite).
- **Conclusion**: Contains only secondary metabolites.

4. **Final Answer**:
- The option that contains only secondary metabolites is **Option D**: Concanavalin, Morphine, Codeine, Vinblastine.