Arrange the following taxa in a descending order based on number of stamens present in a flower
I)Pea
II)Euphorbia
III)Mustard
IV)Makoi

Options

A. I, III, IV, II
B. II, I, III, IV
C. II, IV, III, I
D. I, IV, III, II

Answer

To arrange the given taxa in descending order based on the number of stamens present in their flowers, we will analyze each plant family and the typical number of stamens they possess. Here’s the step-by-step solution:

### Step 1: Identify the number of stamens in each plant family
1. **Pea (Fabaceae family)**: The pea plant has a total of **10 stamens** arranged in a 9 + 1 configuration (9 are fused together and 1 is separate).
2. **Euphorbia (Euphorbiaceae family)**: In Euphorbia, the number of stamens can vary. In male flowers, it can be **1 or more**, but in female flowers, there are **0 stamens**. For the sake of this arrangement, we will consider the male flower with **1 stamen**.
3. **Mustard (Brassicaceae family)**: Mustard has a total of **6 stamens** arranged in a 2 + 4 configuration (2 are shorter and 4 are longer).
4. **Makoi (Solanaceae family)**: Makoi has **5 stamens** in its flowers.

### Step 2: Arrange the taxa based on the number of stamens
Now that we have identified the number of stamens for each plant, we can arrange them in descending order:

1. **Pea (10 stamens)**
2. **Mustard (6 stamens)**
3. **Makoi (5 stamens)**
4. **Euphorbia (1 stamen)**

### Final Arrangement
The final arrangement in descending order based on the number of stamens is:
1. **Pea (Fabaceae)**
2. **Mustard (Brassicaceae)**
3. **Makoi (Solanaceae)**
4. **Euphorbia (Euphorbiaceae)**