Identify the correct sequence for different stages of embryo development in dicots .

Options

A. Proembryo - Torpedo stage - globular embryo
B. Zygote - Heart shaped embryo - globular embryo
C. Globular embryo - Torpedo or mature embryo - hearth shaped embryo
D. Globular embryo - Heat shaped embryo - mature embryo .

Answer

To identify the correct sequence for different stages of embryo development in dicots, we need to understand the typical progression of embryonic stages in dicot plants. Here is a step-by-step breakdown of the process:

### Step 1: Understand the Stages of Embryo Development
In dicots, the embryo development generally follows a specific sequence:
1. **Globular Stage**: This is the initial stage where the embryo is spherical in shape.
2. **Heart-shaped Stage**: In this stage, the embryo begins to develop into a more recognizable shape, resembling a heart.
3. **Torpedo Stage**: This is the mature stage of the embryo where it elongates and develops cotyledons and a radicle.

### Step 2: Analyze the Options
We will examine the provided options to determine which one correctly follows the sequence of embryo development in dicots:
- **Option 1**: Proembryo, Torpedo stage, and Globular embryo - **Incorrect** (the sequence is wrong).
- **Option 2**: Zigot, Heart-shaped, and Globular embryo - **Incorrect** (the sequence is wrong).
- **Option 3**: Globular embryo, Torpedo, Mature embryo, and Heart-shaped embryo - **Incorrect** (the sequence is wrong).
- **Option 4**: Globular embryo, Heart-shaped embryo, and Mature embryo (Torpedo embryo) - **Correct**.

### Step 3: Conclusion
The correct sequence for the different stages of embryo development in dicots is:
1. **Globular embryo**
2. **Heart-shaped embryo**
3. **Mature embryo (Torpedo embryo)**

Thus, the correct answer is **Option 4**.