The part of embryo axis between radicle and cotyledonary node is called

Options

A. epicotyl
B. hypocotyl
C. hilum
D. raphe

Answer

To solve the question, "The part of the embryo axis between radicle and cotyledonary node is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Embryo**:
- The embryo of a seed consists of several parts, including the radicle, cotyledons, and the axis that connects them.

2. **Identify the Key Terms**:
- **Radicle**: This is the part of the embryo that develops into the root.
- **Cotyledonary Node**: This is the part of the embryo where the cotyledons (seed leaves) are attached.

3. **Define the Sections of the Embryo Axis**:
- The embryo axis can be divided into two main sections:
- **Epicotyl**: The part of the embryo above the cotyledonary node, which will develop into the shoot.
- **Hypocotyl**: The part of the embryo below the cotyledonary node, which connects the radicle to the cotyledons.

4. **Locate the Part Between Radicle and Cotyledonary Node**:
- The question specifically asks for the section of the embryo axis that lies between the radicle (the root part) and the cotyledonary node (the attachment point of the cotyledons).
- This section is identified as the **hypocotyl**.

5. **Conclude the Answer**:
- Therefore, the part of the embryo axis between the radicle and the cotyledonary node is called the **hypocotyl**.

### Final Answer:
The part of the embryo axis between the radicle and cotyledonary node is called the **hypocotyl**.

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