Metamorphosis of insects is regulated through which hormone?

Which of the following pairs is incorrectly matched?

Endocrine glands produce,or the action of endocrine glands is mediated through:

Endocrine glands are those glands that pour their secretions into .....

Complete the following analogy-based questions:
$1$. Hyperglycemia : Diabetes Mellitus :: Beta cells : ....
$2$. Excess Growth Hormone : Gigantism :: Low secretion : .......
$3$. Pineal gland : Melatonin :: Somatostatin : .....

Correct the following statements by replacing the incorrect terms:
$(a)$ Insulin is a steroid hormone.
$(b)$ $TSH$ is secreted from the corpus luteum.
$(c)$ Tetraiodothyronine is an emergency hormone.
$(d)$ The pineal gland is located on the anterior part of the kidney.