In human males,the testes lie in the scrotum,because it helps in the

In the process of reproduction as used in $Spirogyra$,the organism splits itself into small pieces.
$(a)$ What is this process of reproduction called?
$(b)$ Will this type of reproduction be asexual or sexual reproduction? Answer with reason.
$(c)$ Is this process same as regeneration? Give reasons.

How are general growth and sexual maturation different from each other?

What are the benefits of using mechanical barriers during sexual act?

Which of the following organisms reproduces asexually by the method of fragmentation?

Which of the following statements are true for flowers?
$(i)$ Flowers are always bisexual
$(ii)$ They are the sexual reproductive organs
$(iii)$ They are produced in all groups of plants
$(iv)$ After fertilisation they give rise to fruits