A. Correct option A B. Explanation for correct option:When the zygote divides meiotically or when zygote undergoes reduction division after division of nucleus i.e. after karyogamy it is called as zygotic meiosis. Zygote is a stage that is formed after fertilization.Chlamydomonas is haploid plant. Hence, zygotic meiosis occurs in chlamydomonas.