Fern plant is a

Options

A. Diploid sporophyte
B. Diploid gametophyte
C. Haploid sporophyte
D. Haploid gametophyte.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the nature of a fern plant, specifically whether it is a diploid sporophyte, diploid gametophyte, haploid sporophyte, or haploid gametophyte.

2. **Identifying the Life Cycle of Ferns:**
Ferns belong to the division Pterophyta and exhibit a life cycle that includes two distinct phases: the sporophyte phase and the gametophyte phase.

3. **Defining the Sporophyte Phase:**
The sporophyte phase is the dominant phase in ferns. It is characterized as diploid, meaning it has two sets of chromosomes (2n). This phase is responsible for producing spores through a process called meiosis.

4. **Defining the Gametophyte Phase:**
The gametophyte phase is haploid (n), meaning it has a single set of chromosomes. This phase arises from the spores produced by the sporophyte and is responsible for producing gametes (sperm and egg).

5. **Conclusion:**
Since the dominant and visible part of the fern plant is the sporophyte, and it is diploid, the correct answer to the question "Fern plant is a..." is option 1: diploid sporophyte.

**Final Answer:**
Fern plant is a diploid sporophyte.

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