Fill in the blanks by selecting the appropriate alternative from those given in brackets.

(i) Regulation of activities inside the body are brought about by …………… and …………… systems. (nervous/digestive/endocrine)

(ii) Hormones are secreted directly into the …………… . (organs/lymph/blood)

(iii) Chemically, some hormones are …………… , some steroids, some …………… . (proteins/amines/carbohydrates)

(iv) Both …………… or deficiency of hormones lead to serious consequences. (excess/absence)

(v) Hormones produced in one species usually show …………… influence in other species. (similar/different)

(i) Regulation of activities inside the body are brought about by nervous and endocrine systems.

(ii) Hormones are secreted directly into the blood.

(iii) Chemically, some hormones are proteins, some steroids, some amines.

(iv) Both excess or deficiency of hormones lead to serious consequences.

(v) Hormones produced in one species usually show similar influence in other species.