The correct option is (c).
Explanation
In sexual reproduction, the zygote is the fundamental diploid cell formed by the fusion of haploid male and female gametes. It serves as the vital link ensuring the continuity of species between organisms of one generation and the next.
Statement-wise Analysis:
- Statement 1 is Correct: The zygote is formed as a direct result of fertilization (syngamy), where the male gamete fuses with the female gamete (egg cell).
- Statement 2 is Incorrect: The zygote is the first cell of the new generation (the diploid sporophyte generation in plants), not the last cell of the old generation. Furthermore, it does not die immediately; it is a vital living cell that undergoes division (mitosis) to sustain the life cycle.
- Statement 3 is Correct: After formation, the zygote undergoes cell division and differentiation to develop into an embryo. This process of development is known as embryogenesis.
Key Takeaway:
The zygote is the product of fertilization and represents the beginning of the new diploid generation, eventually developing into a mature organism through the embryonic stage.