Cleavage is a unique form of mitotic cell division in which
The nucleus does not participate
There is no growth of cells
No spindle develops to guide the cells
The plasma membranes of daughter cells do not separate
Cu ions released from copper- releasing Intra Uterine Devices $(IUDs)$
Which one of the following events immediately follows the entry of a spermatozoan into an oocyte
The only human system that is derived from all the three germ layers is
Which of the following is not correct for gastrulation
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?