What Happens During Cleavage

Multiple Choice

What happens during cleavage?

A) The neural tube-precursor of the spinal cord and brain-forms.
B) Basal and apical cells-precursors of the suspensor and embryo,respectively-form.
C) The fertilized egg divides without growth occurring,forming a ball of cells.
D) Massive movements of cells make the primary body axes visible and organize the three embryonic tissues.