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

Match the hormones given in Column $I$ with their source gland in Column $II$.

Column $I$	Column $II$
$i$. Oxytocin	$a$. Adrenal medulla
$ii$. Melatonin	$b$. Thyroid gland
$iii$. Catecholamines	$c$. Pineal gland
$iv$. Calcitonin	$d$. Hypothalamus

Choose the correct option from below:

The control and coordination of our body by cells is performed by which of the following?

Given below is an incomplete table on hormones,their source glands,and one major effect on the human body. Identify the option representing the correct grouping of hormone,its gland,and effect.

Gland	Secretion	Effect on body
$A$	Estrogen	Maintenance of secondary sexual characters
Alpha cells of Islets of Langerhans	$B$	Raises blood sugar level
Anterior pituitary	$C$	Over secretion leads to gigantism

Identify the endocrine glands $P, Q,$ and $R$ in the given figure.
$\quad\quad\quad P \quad\quad\quad Q\quad\quad\quad R$

The effect of different hormones on the body can be best described as bringing about: