Question

Trace the sequence of events that lead to development of a chick from the fertilized egg of a hen

Answer 1

ANS=The animal such as hand generally look after the egg after laying them. You must have seen a hen sitting over the eggs providing warmth .It is called incubation. The warm help the embryo to develop into chick inside the eggs properly .

An embryo take about 3 weeks (21 days) to develop into a chick after the chick is completed develop it break open the Eggs shell.

It is termed as hatching of egg in animals with external fertilization development of the embryo takes place outside the female body the improv continue to grow within its egg covering.