The correct difference between the embryonic development of monocot and dicot plants is

Options

A. In monocots, suspensor is single celled while in dicots it contains 6 - 10 cells
B. In monocots endosperm is formed before embryo while in dicots embryo is formed before endosperm
C. In dicots , coleoptile and coleorhiza are seen while they are not seen in monocots
D. In dicots the growth of embryo is lateral but in monocots it is vertical

Answer

To solve the question regarding the differences in embryonic development between monocot and dicot plants, we can break down the information systematically:

### Step-by-Step Solution:

1. **Understanding Monocots and Dicots**:
- Monocots (monocotyledons) have one cotyledon, while dicots (dicotyledons) have two cotyledons. This fundamental difference influences their embryonic development.

2. **Double Fertilization**:
- Both monocots and dicots undergo double fertilization, where one male gamete fertilizes the egg to form the zygote (which develops into the embryo), and the other fuses with the central cell to form the endosperm (nutritive tissue).

3. **Embryo Development Stages**:
- In both groups, the early stages of embryo development are similar. The zygote divides to form a pro-embryo, which then develops into a globular stage, followed by a heart-shaped stage, and finally into a mature embryo.

4. **Suspensor Cells**:
- A key difference arises in the number of suspensor cells:
- **Monocots**: Typically have a single suspensor cell.
- **Dicots**: Usually have 6 to 8 suspensor cells.
- This difference is significant during the globular stage of embryo development.

5. **Endosperm Formation**:
- The statement that in monocots, the endosperm forms before the embryo, while in dicots the embryo forms before the endosperm, is incorrect. In both cases, the endosperm is formed to nourish the developing embryo.

6. **Cotyledon Structure**:
- In monocots, there is one large cotyledon, while dicots have two. This structural difference is crucial in identifying the type of plant.

7. **Growth Direction**:
- The growth direction of the embryo also varies:
- **Monocots**: The growth is typically vertical due to the single cotyledon.
- **Dicots**: The growth can be lateral as there are two cotyledons.

### Conclusion:
The correct statement regarding the embryonic development of monocots and dicots is that in monocots, the suspensor cell is single, while in dicots, there are 6 to 8 cells. This is a clear distinction observed during the early stages of embryo development.