Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

Why do higher oranisms shift to sexual mode of reproduction is spits of these being complex?

In haploid organisms that undergo sexual reproduction, name the stage in the life cycle when meiosis occurs. Give reasons for your answer.

Which of the following statements, support the view that eleborate sexual reproduction process appeared much later in the orgabic evolution . i. Lower groups of organisms have simpler body ii. Asexual reproduction is common in higher group. iii. Asexual reproduction is commom in higher groups of organisms. iv. The high incidenc of sexual reproduction occurs in angiosperms and vertebrates. Choose the correct answer from the options given below :