Arrange the fruits in descending order of the chambers of the ovary they develop .
(a) Carcerulus `" "` (b) Schizocarp
( c) Cremocarp `" "` (d) Regma

Options

A. b ,a , d , c
B. a , d , c, b
C. b , d , c , a
D. b , c , a , d

Answer

To solve the question of arranging the fruits in descending order based on the number of chambers (locules) of the ovary they develop, we will analyze each fruit type mentioned in the options and determine the number of locules they possess.

### Step-by-Step Solution:

1. **Identify the Number of Locules for Each Fruit Type**:
- **Schizocarp**: This fruit type is characterized by breaking up into several indehiscent segments, with the number of segments equal to the number of carpels. In this case, it is typically **tetralocular**, meaning it has **4 locules**.
- **Carcerulus**: This fruit is also **tetralocular**, having **4 locules**.
- **Regma**: This fruit type is characterized as **trilocular**, which means it has **3 locules**.
- **Cremocarp**: This fruit type is **bilocular**, indicating it has **2 locules**.

2. **List the Fruits with Their Corresponding Number of Locules**:
- Schizocarp: 4 locules
- Carcerulus: 4 locules
- Regma: 3 locules
- Cremocarp: 2 locules

3. **Arrange the Fruits in Descending Order**:
- Since both Schizocarp and Carcerulus have the highest number of locules (4), they will be listed first.
- Next, we have Regma with 3 locules.
- Finally, Cremocarp with 2 locules.

4. **Final Arrangement**:
- Schizocarp (4 locules)
- Carcerulus (4 locules)
- Regma (3 locules)
- Cremocarp (2 locules)

### Conclusion:
The correct descending order of the fruits based on the chambers of the ovary they develop is:
1. Schizocarp
2. Carcerulus
3. Regma
4. Cremocarp