Primary sex organs differ from the secondary sex organs in all the following, except
They produce gametes
They secrete sex hormones
They are concerned with the conduction of gametes
Testes in male and ovaries in female are the examples of primary sex organ
Given below is a diagrammatic sketch of a portion of human male reproductive system. Which of the following part contributes to the maximum portion of semen?
$A$ : Fertilin protein is present in the egg membrane.
$R$ : It helps in agglutination reaction
In human, the unpaired male reproductive structure is
Cryptorchidism is the condition in man when
Placenta is present in