Sponsor Area

Human Reproduction

Question
CBSEENBI12002885

Gastrula is the embryonic stage in which

  • Cleavage occurs

  • blastocoel forms

  • Germinal layers form

  • Villi form

Solution

C.

Germinal layers form

Transformation of the blastocyst into gastrula with primary germ layers by rearrangement of the cells is called gastrulation. In all the triploblastic animals three germ layers-ectoderm. mesoderm and endoderm are formed by characteristic morphogenetic movements.