During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called

Estalishment of polarity (anterior/posterior,dersal/ventral, medial/lateral) is called

Estalishment of polarity (anterior/posterior,dersal/ventral, medial/lateral) is called

During embryonic development if mouth is formed first and anus is formed later, the condition is called

You are given an earthworm for dissection, how will you identify its anterior, posterior, dorsal and ventral sides

During embryonic development some parts of the embryo differentiate into a set of membranes called extra embryonic membrane. a. Name the extra embryonic membrane. b. Mention its importance in the embryonic development.

During development of embryo in archegonium of Bryophyta its posterior part form protective embryo cover which is called as

Read the following statements (i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals. Notochord is an ectodermal derived rod like structure formed on the ventral side during embryonic development in some animals. In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm ans such a body cavity is called pseudocoelom. Which of the following statement(s) is/are correct?

Statement-I : During embryonic development of humans, the inner cell mass differentiates into ectoderm, endoderm and mesoderm and these layers give rise to all tissues and organs in adults. Statement-II The inner cell mass contains certain cells called stem cells, which have the potency to give rise to all the tissues and organs.

Statement-I : During embryonic development of humans, the inner cell mass differentiates into ectoderm, endoderm and mesoderm and these layers give rise to all tissues and organs in adults. Statement-II The inner cell mass contains certain cells called stem cells, which have the potency to give rise to all the tissues and organs.