Match the following and choose the correct combination from the options given.
`{:("Column I","Column II"),("A. Mustard","1. Polyadelphy"),("B. Brinjal","2. Diadelphy"),("C. Citrus","3. Variations in the length of filaments"),("D. Pea ","4. Epipetalous stamens"):}`

Options

A. A - 4 , B - 3, C - 2 , D - 1
B. A - 1, B - 2, C - 3 , D - 4
C. A - 2 , B - 3, C - 4 , D - 1
D. A - 3 , B - 4, C - 1 , D - 2

Answer

To solve the matching question, we need to correctly pair the plants from Column I with their corresponding characteristics in Column II. Let's analyze each option step by step.

### Step 1: Analyze the first item - Mustard
- **Mustard** is known for having **variations in the length of filaments**. This means that the stamens in mustard plants can have different lengths.
- Thus, we can match **A. Mustard** with **3. Variations in the length of filaments**.

### Step 2: Analyze the second item - Brinjal
- **Brinjal** (also known as eggplant) has **epipetalous stamens**, where the stamens are attached to the petals. This is a characteristic feature of brinjal.
- Therefore, we can match **B. Brinjal** with **4. Epipetalous stamens**.

### Step 3: Analyze the third item - Citrus
- **Citrus** plants are known to exhibit a condition called **polydelphy**, which means they have more than two bundles of stamens.
- Hence, we can match **C. Citrus** with **1. Polyadelphy**.

### Step 4: Analyze the fourth item - Pea
- **Pea** plants are characterized by having **diadelphous stamens**, which means they have two bundles of stamens.
- Thus, we can match **D. Pea** with **2. Diadelphy**.

### Summary of Matches
- A. Mustard → 3. Variations in the length of filaments
- B. Brinjal → 4. Epipetalous stamens
- C. Citrus → 1. Polyadelphy
- D. Pea → 2. Diadelphy

### Final Answer
The correct combination from the options given is:
- A - 3
- B - 4
- C - 1
- D - 2

This corresponds to option number 4 based on the provided options.