given below are four statements (i)-(iv) reagarding embryonic development in humans.
(i). Cleavage divisions about considerable increase I the mass of protoplasm
(ii). With more cleavage divisions, the resultant blatomeres become smaller and smaller.
(iii). the blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.
(iv). Cleavage divisions result in a solid ball of cells called morula.
Which of the above two statemetns are correct?