The largest antherozoids are found in :

Options

A. Cycas
B. Cedrus
C. Ephedra
D. Pinus

Answer

To determine where the largest antherozoids are found, we can follow these steps:

### Step 1: Understand the term "antherozoids"
Antherozoids are male gametes in plants, specifically referring to sperm cells in the context of plant reproduction.

### Step 2: Identify the groups of plants
Antherozoids are found in various groups of plants, including Bryophytes, Pteridophytes, and Gymnosperms. Among these, Gymnosperms are known for having larger male gametes compared to other groups.

### Step 3: Research Gymnosperms
Gymnosperms are seed-producing plants that do not form flowers or fruits. They include plants like Cycas, Cedrus, Ephedra, and Pinus.

### Step 4: Compare the sizes of antherozoids in Gymnosperms
- **Cycas**: The antherozoids can reach up to 50 cm in length, which is the largest known size in nature.
- **Cedrus**: The antherozoids are about 5 cm in length.
- **Ephedra**: The antherozoids range from 1-2 cm in length.
- **Pinus**: The antherozoids are about 1.5-2.5 cm in length.

### Step 5: Conclusion
Based on the sizes compared, Cycas has the largest antherozoids among the Gymnosperms, making it the correct answer.

### Final Answer:
The largest antherozoids are found in **Cycas**.

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