CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
Male contains XY chromosomes while female contains __________ chromosomes.
XX
Frogs need __________ hormone for metamorphosis.
thyroxine
__________ is a balanced food in itself.
milk
Thyroxine need __________ for its production.
iodine
Growth hormone is produced by the __________ gland.
pituitary