$A$ : Blastocyst undergoes gastrulation to produce the three germinal layers.
$R$ : This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo
Assertion and Reason both are correct and also correct explantion.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Which of the embryo has parasite mode of nutrition.
During gastrulation the dorsal lip of blastopore (1 external sign of gastrulation) appears
Find out $A, B$ and $C$ in the figure given below
Number of sperms present in a single ejaculation of semen contains
Ontogenetically liver and pancreas are or During embryonic development pancreas and liver develop from which germinal layer