Select an incorrect statement

Options

A. In majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of primary root.
B. tap root system are seen in the mustard plant
C. In some plants, like grass ,banyan tree, adventitious roots are found
D. In monocotyledonous plants, the primary root is short lived

Answer

To solve the question of selecting an incorrect statement, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Options**:
- We have four statements regarding root systems in different types of plants. We need to identify which one is incorrect.

2. **Evaluate Each Statement**:
- **Option 1**: "In majority of the dicotyledonous plants, the direct elongation of the radical leads to formation of primary root."
- This statement is **correct**. In dicots, the radical (embryonic root) does elongate to form the primary root.

- **Option 2**: "Taproot system are seen in the mustard plant."
- This statement is also **correct**. Mustard is a dicot and exhibits a taproot system where the primary root persists and develops lateral roots.

- **Option 3**: "In some plants like grass, banyan tree, adventitious roots are found."
- This statement is **incorrect**. Grass has a fibrous root system, and while banyan trees do have prop roots, they are not classified as adventitious roots in the same context. Thus, this statement is misleading.

- **Option 4**: "In monocotyledonous plants, the primary root is short-lived."
- This statement is **correct**. In monocots, such as wheat, the primary root is indeed short-lived and is replaced by a fibrous root system.

3. **Identify the Incorrect Statement**:
- The incorrect statement among the options is **Option 3**: "In some plants like grass, banyan tree, adventitious roots are found."

### Final Answer:
The incorrect statement is: **"In some plants like grass, banyan tree, adventitious roots are found."**