Planes of Cleavages
During cleavages, differnt cleavage furrows may divide the egg from different planes. Few important cleavage planes are following:
1. Meridional plane- When cleavage furrow passes through the centre of animal-vegetal axis and bisects the both poles of the egg, then such plane of cleavage is called meridional plane, e.g., Rana pipiens, Lepidosteus osseus and first cleavage [...]




