Identify the correct ascending sequence of the following aspects of meiosis
(A) Number of spindle apparatus formed (B) Number of chromosomal divisions
(C ) Number of cells formed (D) Number of nuclear generation

Options

A. B,C,A,D
B. B,D,C,A
C. D,C,A,B
D. B,D,A,C

Answer

To solve the question regarding the correct ascending sequence of aspects of meiosis, we need to analyze each aspect mentioned:

1. **Number of spindle apparatus formed (A)**
2. **Number of chromosomal divisions (B)**
3. **Number of cells formed (C)**
4. **Number of nuclear divisions (D)**

### Step-by-Step Solution:

**Step 1: Identify the number of chromosomal divisions (B)**
- Meiosis involves two rounds of chromosomal division: Meiosis I and Meiosis II.
- Therefore, the number of chromosomal divisions is **2**.

**Step 2: Identify the number of nuclear divisions (D)**
- Each round of meiosis (Meiosis I and Meiosis II) also involves a nuclear division.
- Thus, the number of nuclear divisions is also **2**.

**Step 3: Identify the number of spindle apparatus formed (A)**
- During meiosis, a spindle apparatus is formed during each of the two meiotic divisions.
- Therefore, there are **3 spindle apparatus** formed: one for Meiosis I and two for Meiosis II.

**Step 4: Identify the number of cells formed (C)**
- At the end of meiosis, four haploid cells are produced from one diploid cell.
- Thus, the number of cells formed is **4**.

### Summary of Findings:
- Number of chromosomal divisions (B): **2**
- Number of nuclear divisions (D): **2**
- Number of spindle apparatus formed (A): **3**
- Number of cells formed (C): **4**

### Ascending Order:
Now, we can arrange these findings in ascending order:
1. Number of chromosomal divisions (B) = 2
2. Number of nuclear divisions (D) = 2
3. Number of spindle apparatus formed (A) = 3
4. Number of cells formed (C) = 4

Thus, the correct ascending sequence is:
**(B) Number of chromosomal divisions < (D) Number of nuclear divisions < (A) Number of spindle apparatus formed < (C) Number of cells formed.**

### Final Answer:
The correct ascending sequence is: **B < D < A < C**.

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