In dicotyledonous embryo, the cylindrical portion below the level of cotyledons which terminates into root tip is

Options

A. Hypocotyle
B. Epicotyle
C. Plumule
D. Radicle

Answer

To solve the question, we need to identify the cylindrical portion of a dicotyledonous embryo that is located below the level of the cotyledons and terminates into the root tip. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Structure of a Dicotyledonous Embryo
- A dicotyledonous embryo has two seed leaves known as cotyledons.
- The embryo consists of different parts: the cotyledons, the shoot tip (plumule), and the root tip (radical).

**Hint:** Familiarize yourself with the basic anatomy of a dicotyledonous embryo, including the terms cotyledons, plumule, and radical.

### Step 2: Identify the Relevant Parts
- The part of the embryo that is located below the cotyledons is crucial for this question.
- The area below the cotyledons connects to the root tip, which is referred to as the radical.

**Hint:** Visualize the embryo structure or refer to a diagram to locate the cotyledons, radical, and the area below them.

### Step 3: Define the Cylindrical Portion
- The cylindrical portion that lies between the cotyledons and the root tip is known as the hypocotyl.
- The hypocotyl serves as a connecting structure between the shoot (plumule) and the root (radical).

**Hint:** Remember that the hypocotyl is specifically the region that connects the shoot and root, distinguishing it from the radical and plumule.

### Step 4: Conclude the Answer
- Given that the question asks for the cylindrical portion below the level of cotyledons that terminates into the root tip, the correct answer is the hypocotyl.

**Final Answer:** The cylindrical portion below the level of cotyledons which terminates into the root tip is called the **hypocotyl**.