The life cycle with alternating generations is called?

The life cycle with alternating generations is called?

• A. Alternation of Generations
• B. Diploid-dominant Cycle
• C. Haploid Cycle
• D. Zygotic Meiosis

Answer: (A)

The life cycle that alternates between a diploid and a haploid generation is called alternation of generations. In this pattern, a diploid sporophyte undergoes meiosis to produce haploid spores, which grow into a multicellular haploid gametophyte. The gametophyte makes haploid gametes by mitosis, and fertilization of these gametes forms a diploid zygote that grows into a new sporophyte, continuing the cycle. This contrasts with a diploid-dominant or haploid-dominant cycle, which emphasize one stage over the other, and with zygotic meiosis, where meiosis occurs after the zygote rather than sustaining two alternating multicellular generations.

The life cycle that alternates between a diploid and a haploid generation is called alternation of generations. In this pattern, a diploid sporophyte undergoes meiosis to produce haploid spores, which grow into a multicellular haploid gametophyte. The gametophyte makes haploid gametes by mitosis, and fertilization of these gametes forms a diploid zygote that grows into a new sporophyte, continuing the cycle. This contrasts with a diploid-dominant or haploid-dominant cycle, which emphasize one stage over the other, and with zygotic meiosis, where meiosis occurs after the zygote rather than sustaining two alternating multicellular generations.