From given statements with reference to the embryo, which of these are incorrect?
a. A typical dicot embryo consists of an embryonal axis and 2 cotyledons.
b. The portion of the embryonal axis above the level of cotyledons is hypocotyl.
c. The portion below the level of cotyledons is epicotyl.
d. The epicotyl terminates with the stem tip, and the hypocotyl terminates with the root tip.

Options

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

Answer

To determine which statements regarding the embryo are incorrect, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: A typical dicot embryo consists of an embryonal axis and 2 cotyledons.**
- This statement is **correct**. Dicotyledonous plants have two cotyledons in their embryo, along with the embryonal axis.

2. **Statement B: The portion of the embryonal axis above the level of cotyledons is hypocotyl.**
- This statement is **incorrect**. The portion of the embryonal axis that is above the level of the cotyledons is actually called the **epicotyl**. The hypocotyl is the part below the cotyledons.

3. **Statement C: The portion below the level of cotyledons is epicotyl.**
- This statement is **incorrect**. The portion below the level of the cotyledons is known as the **hypocotyl**, while the epicotyl is above the cotyledons.

4. **Statement D: The epicotyl terminates with the stem tip, and the hypocotyl terminates with the root tip.**
- This statement is **correct**. The epicotyl does indeed terminate at the stem tip (also referred to as the plumule), and the hypocotyl terminates at the root tip (also referred to as the radicle).

### Conclusion:
The incorrect statements are **B** and **C**.