In which type of reproduction do genetic variations occur in the offspring?

List six specific characteristics of sexual reproduction.

Name the type of asexual reproduction in:
$(a)$ Planaria
$(b)$ Rhizopus
$(c)$ Spirogyra
$(d)$ Hydra

Which of the following is an artificial method of vegetative propagation?

$(a)$ Draw a sectional view of the human female reproductive system and label the parts where:
$(i)$ eggs develop.
$(ii)$ fertilization takes place.
$(iii)$ the fertilized egg gets implanted.
$(b)$ Describe,in brief,the changes the uterus undergoes:
$(i)$ to receive the zygote.
$(ii)$ if the zygote is not formed.

Give reasons as to why the following processes are different from each other:
$(a)$ Fission in $Amoeba$ and $Plasmodium$.
$(b)$ Binary fission and Fragmentation.