Match the columns and find the correct options
`{:(,,I,,II),(,a,"Pigments",i,"Abrin, ricin"),(,b,"Toxins",ii,"Concannavalin A"),(,c,"Alkloids",iii,"Corotenoids"),(,d,"Lectins",iv,"Morphine, codeine"):}`

Options

A. a-iv, b-iii, c-I, d-ii
B. a-ii, b-iv, c-i, d-iii
C. a-iii, b-i, c-iv, d-ii
D. a-i, b-ii, c-iii, d-iv

Answer

To solve the matching question, we need to pair the items from Column I (types of secondary metabolites) with their corresponding examples from Column II. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the types of secondary metabolites
We have four types of secondary metabolites listed in Column I:
1. Pigments
2. Toxins
3. Alkaloids
4. Lectins

### Step 2: Analyze the examples given in Column II
The examples provided in Column II are:
- i. Abrin, ricin
- ii. Concanavalin A
- iii. Carotenoids
- iv. Morphine, codeine

### Step 3: Match the types with their examples
1. **Pigments**: These are compounds that give color to plants. The correct match is **Carotenoids (iii)**, which are a type of pigment.

2. **Toxins**: These are harmful substances produced by organisms. The correct match is **Abrin and Ricin (i)**, which are known toxins.

3. **Alkaloids**: These are nitrogen-containing compounds that often have pharmacological effects. The correct match is **Morphine and Codeine (iv)**, which are well-known alkaloids.

4. **Lectins**: These are proteins that bind carbohydrates. The correct match is **Concanavalin A (ii)**, which is a type of lectin.

### Step 4: Write down the final matches
- A (Pigments) → iii (Carotenoids)
- B (Toxins) → i (Abrin, ricin)
- C (Alkaloids) → iv (Morphine, codeine)
- D (Lectins) → ii (Concanavalin A)

### Step 5: Determine the correct option
From the matches:
- A → iii
- B → i
- C → iv
- D → ii

This corresponds to:
- A is marked with 3
- B is marked with 1
- C is marked with 4
- D is marked with 2

Thus, the correct option is **Option 3**.

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