In monocots,the most common pollen tetrad is

Options

A. Isobilateral
B. Tetrahedral
C. Linear
D. T- shaped or decussate.

Answer

To solve the question regarding the most common pollen tetrad in monocots, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Pollen Tetrad**:
- A pollen tetrad consists of four pollen grains that are formed from the division of a pollen mother cell. These grains can be arranged in different configurations.

2. **Identify the Types of Pollen Tetrads**:
- The arrangements of pollen tetrads can be categorized into several types, including tetrahedral, linear, isobilateral, T-shaped, and others.

3. **Analyze the Options**:
- The options provided include:
- **Isobilateral**
- **Tetrahedral**
- **Linear**
- **T-shaped**

4. **Evaluate Each Option**:
- **Isobilateral**: In this arrangement, the pollen grains are organized in two different planes, which corresponds to a tetrahedral arrangement. This is commonly seen in monocots.
- **Tetrahedral**: This arrangement has four grains in one plane, which is not the typical arrangement for monocots.
- **Linear**: This arrangement results from a transverse division of the pollen mother cell, leading to a linear configuration. This is not common in monocots.
- **T-shaped**: This arrangement is also a result of transverse division and is not typical for monocots.

5. **Conclusion**:
- Based on the analysis, the most common pollen tetrad in monocots is **Isobilateral**.

### Final Answer:
The most common pollen tetrad in monocots is **Isobilateral**.

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