Which sex chromosome determines the sex of body?
Y Chromosome determines the sex of the individual. The presence of Y chromosome forms a male (XY) while the absence of it indicates a female (XX).
To which body part pituitary gland is attached?
Pituitary gland is attached to brain.
Why endocrine gland are also referred to as ductless glands?
Endocrine glans are referred to as ductless glands because they release the hormones directly into the blood stream. They do not have any ducts for their secretion.