Life cycle of gymnosperm is :-

Options

A. Haplontic
B. Haplodiplontic
C. Diplontic
D. Diplohaplontic

Answer

### Step-by-Step Solution:

1. **Understanding Gymnosperms**: Gymnosperms are a group of seed-producing plants that include conifers and cycads. They are characterized by having seeds that are not enclosed in an ovary.

2. **Identifying Life Cycle Types**: The life cycles of plants can be categorized into four main types: haplontic, haplo-diplontic, diplontic, and diplohaplontic. Each type indicates the dominance of either the haploid (gametophyte) or diploid (sporophyte) stage.

3. **Analyzing the Gymnosperm Life Cycle**: In gymnosperms, the dominant phase of the life cycle is the sporophyte, which is diploid. The sporophyte produces spores through meiosis, which then develop into gametophytes.

4. **Gametophyte Characteristics**: The gametophyte in gymnosperms is typically reduced and dependent on the sporophyte for nutrition. It is usually short-lived and consists of a few cells.

5. **Conclusion**: Given that the dominant phase in gymnosperms is the diploid sporophyte and the gametophyte is reduced and dependent, the correct classification of the gymnosperm life cycle is **diplontic**.

### Final Answer:
The life cycle of gymnosperms is **diplontic**.

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