Mention the ploidy of the following:
zygote of a fern

Explanation

**Step-by-Step Solution:**

1. **Understanding Ploidy**: Ploidy refers to the number of sets of homologous chromosomes in a cell. It is denoted by 'N', where 'N' represents one set of chromosomes.

2. **Life Cycle of Ferns**: Ferns are vascular plants that reproduce via spores. They have a dominant phase in their life cycle known as the sporophyte phase.

3. **Fertilization Process**: In ferns, fertilization occurs when the male gamete (sperm) and the female gamete (egg) combine. This process requires water to facilitate the movement of sperm to the egg.

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