Diplontic life cycle is seen in ________.

Options

A. Funaria
B. Equisetum
C. Fucus
D. Adiantum

Answer

To solve the question "Diplontic life cycle is seen in ________," we will analyze the options provided and determine which organism exhibits a diplontic life cycle.

### Step-by-Step Solution:

1. **Understanding Diplontic Life Cycle**:
- A diplontic life cycle is characterized by a dominant diploid (2n) stage. In this cycle, the organism spends most of its life in the diploid phase, producing haploid (n) gametes through meiosis.

2. **Analyzing the Options**:
- **Option A: Finaria**
- Finaria is a type of bryophyte, which typically exhibits a haplodiplontic life cycle, meaning it has both haploid and diploid stages but does not have a dominant diploid phase. Therefore, this option is incorrect.

- **Option B: Equisetum**
- Equisetum (horsetail) also follows a haplodiplontic life cycle, where both the haploid gametophyte and diploid sporophyte are present, but again, neither stage is dominant. Thus, this option is incorrect.

- **Option C: Fucus**
- Fucus is a brown alga that exhibits a diplontic life cycle. In Fucus, the dominant phase is the diploid sporophyte, which produces gametes directly. Therefore, this option is correct.

- **Option D: Adiantum**
- Adiantum (maidenhair fern) has a life cycle that is also haplodiplontic, where the gametophyte is independent and dominant. Hence, this option is incorrect.

3. **Conclusion**:
- After analyzing all the options, we find that the organism exhibiting a diplontic life cycle is **Option C: Fucus**.

### Final Answer:
The diplontic life cycle is seen in **Fucus**.

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