Q3. Which hormone prepares the uterus for implantation of the fertilised egg, and what kind of hormone is it?
Progesterone, a steroid hormone made by the gonads (NCERT page 301).
Q4. What do the mineralocorticoids control?
How much water and salt the kidney excretes (NCERT page 301).
Q5. Where is thyroxine made, which amino acid is it derived from, and what do too little and too much of it cause?
In the thyroid gland, from tyrosine (it is iodinated). Too little causes hypothyroidism, with lethargy and obesity; too much causes hyperthyroidism (NCERT pages 300–301).
Q6. Name the two glands that make steroid hormones, and the steroid hormones each makes.
The adrenal cortex, which makes glucocorticoids and mineralocorticoids, and the gonads, which make testosterone in males and estradiol in females (NCERT page 301).