Study the figure given below and answer the questions that follow :
(a)Name the stage of human embryo the figure represents.
(b)Identify 'A' in the figure and mention its function .
( c )Mention the fate of the inner cell mass after implantation in the uterus .

(d)Where are the stem cells located in this embryo ?

Explanation

(a)Blastocyst.
(b )Trophoblast. Its helps in attachment of the blastocyst to the endometrium of uterine wall.
(c )The inner cell mass gets differentiated as the embryo
(d)The inner cell mass contains certain cells called stem cells which have the potency to give rise to all the tissues and organs.