From the perspective of embryonic origin,which of the following is ectodermal?

Match the entries in Column-$I$ with those of Column-$II$ and choose the correct answer given below.

Column-$I$	Column-$II$
$A$. $FSH$	$(p)$ Normal growth
$B$. $GH$	$(q)$ Ovulation
$C$. Prolactin	$(r)$ Parturition
$D$. Oxytocin	$(s)$ Water diuresis
	$(t)$ Milk secretion

How many of the following organs are included in both the endocrine system and the reproductive system?
Kidney,Ovary,Stomach,Small intestine,Pancreas,Testis

Identify the difference between the following pairs:
$(1)$ Neural system - Endocrine system
$(2)$ Oxytocin - Vasopressin
$(3)$ Dwarfism - Gigantism
$(4)$ $FSH - LH$

Which of the following hormones regulate carbohydrate metabolism?

Arrange the following events in the correct sequence for the regulation of blood sugar level:
$(i)$ Increase in blood sugar level
$(ii)$ Increase in circulating glucagon
$(iii)$ Release of glucose from glycogen
$(iv)$ Decrease in blood sugar level