New York State Chemistry RegentsNew York State Earth Science Regents

 
Living Environment Regents June 2006 Question 18 PDF Print E-mail
Reproduction and Development

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Correct Answer: Option 3 Estrogen and progesterone influence the activity of C.

C represents the uterus of a female reproductive system. Estrogen increases the uterine growth while progesterone maintains secretary endometrium or the uterine lining.

Option 1 is incorrect. Testosterone cannot be transferred from the testis to the ovary. Sperm is transported from testis (passing through the penis to the vagina of the female) to the ovary during fertilization.

Testosterone is a steroid hormone produced by the interstitial cells of the testes (A).It is not formed in the ovary (D) therefore option 2 is incorrect. Though it is true that testosterone aids the development of sperm

The primary roles of progesterone in the human reproduction process are the following: stimulates the growth of a cushiony endometrial lining that serves as a nest for the fertilized egg; prepares breast tissue for the secretion of breast milk; and generally maintains the advancement of pregnancy. It does not stimulate the division of egg in the uterus and thus, option 4 is incorrect.

 

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