Every living organism produces another organism like itself. What is this phenomenon called?

$(a)$ Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone.
$(b)$ Name the parts of the human female reproductive system where:
$(i)$ fertilisation takes place.
$(ii)$ implantation of the fertilised egg occurs. Explain how the embryo gets nourishment inside the mother's body?

Explain the term "Regeneration" as used in relation to reproduction of organisms. Describe briefly how regeneration is carried out in multicellular organisms like $Hydra$.

What happens to the following parts of a flower after fertilization?
$(i)$ Ovum (Egg cell)
$(ii)$ Ovary
$(iii)$ Ovule
$(iv)$ Sepals and petals

Which organ is responsible for the production of eggs in females?

What is the number of chromosomes in a human somatic cell?