Male gamete of Cycas is largest in plant kingdom, is:-

Options

A. Non motile
B. Biflagellate
C. Multiciliate
D. Uniflagellate

Answer

**Step-by-Step Solution:**

1. **Understanding the Organism**: Cycas is a genus of plants that belongs to the group known as Gymnosperms, specifically within the order Cycadales. This group is characterized by their palm-like appearance and evergreen nature.

2. **Identifying the Reproductive Process**: Cycas undergoes sexual reproduction, which is classified as oogamous. This means that there are distinct male and female gametes, with the male gamete being motile and the female gamete being non-motile.

3. **Analyzing the Male Gamete**: The male gamete of Cycas is noted for being the largest among all plants. It is described as multiciliated, which means it has multiple flagella (cilia) that aid in its movement.

4. **Characteristics of the Male Gamete**: The male gamete is top-shaped, multicellate, and has a unique structure where the anterior half is coiled and covered with thousands of small cilia. This structure allows it to swim and reach the female gamete during fertilization.

5. **Choosing the Correct Option**: Given the options provided (non-motile, biflagellate, multicellate, uniflagellate), the correct answer is "multicellate" because the male gamete of Cycas is indeed multiciliated and is the largest in the plant kingdom.

**Final Answer**: The male gamete of Cycas is multicellate.

---