Name the hormone that is released by testes at the onset of puberty.

Complete the following sentences.

(a) In females, the uterine wall thickens to receive the __________.

(b) Endocrine glands release hormones directly into _________for transportation to the __________.

(c) The sex hormones, _________________ and estrogen are responsible for the development of __________ characters.

(d) Release of sex hormones is under the control of a hormone secreted from the __________.

Give a suitable word for each of the following statements.

(a) The site which response to a hormone.

(b) Name of a gland which transports secretions through ducts.

(c) Chemicals which control changes at adolescence stage.

(d) It marks the beginning of the reproductive period.

Name the female hormone produced by ovaries that helps in the development of mammary glands.

Match the hormones given in Column A with their deficiency disease given in Column B.