In Pinus, the male gametes are

Options

A. Non-ciliate
B. Multiciliate
C. Biciliate
D. Uniciliate.

Answer

To solve the question "In Pinus, the male gametes are?", we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**:
- Pinus is a genus of coniferous trees, commonly known as pines. They reproduce via seeds and have a specific structure for their male gametes.

2. **Identify Male Gametes**:
- In Pinus, male gametes are produced in the male cones. The process involves the formation of pollen grains which contain the male gametes.

3. **Examine the Characteristics of Male Gametes**:
- The male gametes in Pinus are carried by pollen tubes. This is an important aspect as it indicates how these gametes reach the ovule for fertilization.

4. **Determine the Motility of Male Gametes**:
- In many plants, male gametes are motile and can swim towards the ovule. However, in Pinus, the male gametes are non-motile. This means they do not have the ability to move independently.

5. **Analyze the Options Provided**:
- The options given are:
- A) Non-ciliated
- B) Multiciliated
- C) Biseliate
- D) Uniciliate
- Based on the information gathered, we know that the male gametes in Pinus lack cilia, which means they are non-ciliated.

6. **Select the Correct Answer**:
- Since the male gametes in Pinus are non-motile and lack cilia, the correct answer is option A: Non-ciliated.

### Final Answer:
The male gametes in Pinus are **non-ciliated**.

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