1) F

A – insulin can fit in the pancreas row.

B – Adrenaline increases heartbeat rate, so this option can fit in the first row

C – Pituitary gland is the gland which secretes ADH, so it fits.

D – Testes secrete testosterone so it fits in the fourth row

E – Ovary secretes oestrogen so it fits in the second row

F – Carbohydrase is an enzyme. It is neither a gland, hormone nor a function. So it does not fit anywhere, hence is the correct answer.

G – ADH (hormone in third row) regulates water level in blood. So this fits.