The two glands A and B which occur in pairs, are present in the endocrine system of humans. The pair of gland A is found only in females whereas the pair of gland B occurs only in males. The glands A make and secrete two hormones C and D whereas glands B make and secrete only one hormone E. In addition to hormones, glands A make gametes F whereas glands B make gametes G.
(a) What are glands A?
(b) What are hormones C and D?
(c) What are glands B? Name the hormone E.
(d) What are gametes (i) F and (ii) G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?

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Solution

(a) Glands A refer to ovaries.
(b) C and D refer to the hormones oestrogen and progesterone.
(c) Glands B refer to testes and the hormone which they produce is called testosterone.
(d) Gametes F - ovaries
Gametes G - sperm
(e) When males and females reach puberty, the secretions of hormones like oestrogen, progesterone and testosterone begin.

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Q. A and B are two pairs of glands that are present in the human endocrine system. The pair A is found only in females, whereas B is present only in males. Glands A make and secrete two hormones C and D, whereas glands B make and secrete only one hormone E. In addition to hormones, Glands A make gametes F, whereas glands B make gametes G.
(a) What are the glands A?
(b) What are the hormones C and D?
(c) What are the glands B? Name the hormone E.
(d) What are the gametes F and G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?

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(c) Name the endocrine gland associated with kidneys?
(d) Which endocrine gland is present in males but not in females?

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