Which hormone helps in the development of the female reproductive system during puberty?

Correct Answer: A

Rationale: Estrogen is the correct answer as it is the primary hormone responsible for the development of the female reproductive system during puberty. It stimulates the growth of the ovaries, regulates the menstrual cycle, and promotes the development of secondary sexual characteristics. Progesterone is involved in maintaining pregnancy, not puberty. FSH (Follicle Stimulating Hormone) is involved in the maturation of ovarian follicles, not overall reproductive system development. Testosterone is a male sex hormone and is not primarily responsible for the development of the female reproductive system.

Correct Answer: A

Rationale: The primary function of the ovaries in females is to produce eggs, which are essential for reproduction. Ovaries contain structures called follicles that release mature eggs during ovulation. This process is crucial for fertilization to occur. The other choices are incorrect because storing sperm is the function of the male reproductive system, producing estrogen and progesterone is a function of the ovaries but not the primary one, and facilitating fertilization is a process that involves multiple reproductive structures, not just the ovaries. Hence, choice A is the correct answer.

Correct Answer: B

Rationale: The correct answer is B: Provide oxygen and nutrients to the fetus. The placenta acts as a bridge between the mother and fetus, allowing the exchange of oxygen and nutrients necessary for fetal growth and development. It also helps in removing waste products from the fetus. Choices A and D are incorrect as the placenta does not excrete waste products or help in the production of milk. Choice C is incorrect as the placenta does not store the fetus but rather provides essential support and nourishment during pregnancy.

Correct Answer: A

Rationale: The correct answer is A: Prolactin. Prolactin is the hormone responsible for triggering milk production in the mammary glands. It is produced by the pituitary gland in response to the suckling stimulus from a newborn. Oxytocin, on the other hand, is responsible for the ejection of milk from the mammary glands. Estrogen and progesterone play roles in the menstrual cycle and pregnancy but do not directly trigger milk production.

Correct Answer: B

Rationale: The correct answer is B: Seminal vesicles. Seminal vesicles produce seminal fluid, which is a major component of semen. They contribute fructose, prostaglandins, and other substances to nourish and protect sperm. The prostate gland (choice A) produces a milky fluid that helps activate sperm. The epididymis (choice C) is a coiled tube where sperm mature and are stored. The testes (choice D) produce sperm and testosterone, but not seminal fluid. Therefore, the correct choice is B as seminal vesicles specifically produce seminal fluid.