List the names of hormones secreted by the following endocrine glands and mention their functions:
$(i)$ Thyroid gland $(ii)$ Pituitary gland $(iii)$ Adrenal gland.

Which is the male sex hormone?

Choose the incorrect statement about insulin.

Iodine is necessary for the synthesis of which hormone?

Choose the incorrect statement about insulin:

$(a)$ An old man is advised by his doctor to take less sugar in his diet. Name the disease from which the man is suffering. Mention the hormone due to imbalance of which he is suffering from this disease. Which endocrine gland secretes this hormone?
$(b)$ Name the endocrine gland which secretes growth hormone. What will be its effect on a person of:
$(i)$ Deficiency of growth hormones?
$(ii)$ Excess secretion of growth hormones?