Which of the following secondary metabolites belong to the group drugs
I. Morphine`" "`II. Curcumin
III. Codeine`" "`IV. Vinblastine
V. Abrin
(a) I and II
(b) I and V
(c) II and IV
(d) I and III

Options

A. I and II
B. I and V
C. II and IV
D. I and III

Answer

To determine which of the following secondary metabolites belong to the group of drugs, we will analyze each option provided in the question:

1. **Morphine**: Morphine is a well-known opiate used as a pain reliever. It is derived from the opium poppy and is classified as a drug. Therefore, morphine belongs to the group of drugs.

2. **Curcumin**: Curcumin is the active compound found in turmeric. It has been studied for its potential therapeutic effects, including anti-inflammatory and anticancer properties. Thus, curcumin is also considered a drug.

3. **Codeine**: Codeine is another opiate that is used to treat pain and cough. Like morphine, it is derived from the opium poppy and is classified as a drug. Therefore, codeine belongs to the group of drugs.

4. **Vinblastine**: Vinblastine is an alkaloid derived from the periwinkle plant and is used in chemotherapy to treat various types of cancer. Thus, vinblastine is also classified as a drug.

5. **Abrin**: Abrin is a toxic protein derived from the seeds of the rosary pea plant. It is not used as a drug and is considered highly toxic. Therefore, abrin does not belong to the group of drugs.

Now, let's summarize the findings:
- **I. Morphine** - Drug
- **II. Curcumin** - Drug
- **III. Codeine** - Drug
- **IV. Vinblastine** - Drug
- **V. Abrin** - Not a drug

Based on the analysis, the secondary metabolites that belong to the group of drugs are:
- Morphine (I)
- Curcumin (II)
- Codeine (III)
- Vinblastine (IV)

Now, let's evaluate the options given in the question:
- (a) I and II - Correct (both are drugs)
- (b) I and V - Incorrect (V is not a drug)
- (c) II and IV - Correct (both are drugs)
- (d) I and III - Correct (both are drugs)

The correct answer is **(d) I and III** as both morphine and codeine are classified as drugs.