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

Which sex hormone is produced by the testes in males?

In the list of organisms given below,those that reproduce by the asexual method are:
$(i)$ banana
$(ii)$ dog
$(iii)$ yeast
$(iv)$ Amoeba

In which organism does reproduction occur through binary fission?

List any two modes of asexual reproduction in animals. Under which mode of reproduction is vegetative propagation placed and why? List two advantages of vegetative propagation.

Which method of asexual reproduction occurs in $Plasmodium$?