Chapter 46-47
Chapter 46-47: Reproduction and Development
____ 1. Which of the following are possible advantages of asexual reproduction? a. It allows the species to endure periods of fluctuating or unstable environmental conditions. b. It enhances genetic variability in the species. c. It enables the species to colonize new regions rapidly. d. Both A and B are true. e. A, B, and C are true. 2. Why is sexual reproduction important? a. It allows animals to conserve resources and reproduce only during optimal conditions. b. The resulting diverse phenotypes may enhance survival of a population in a changing environment. c. It can result in numerous offspring in a short amount of time. d. It enables isolated animals to colonize a habitat rapidly. e. Both A …show more content…
and D are important. 3. Organisms that produce amniote eggs, in general, a. have a higher embryo mortality rate than do those with unprotected embryos. b. invest most of their reproductive energy in the embryonic and early postnatal development of their offspring. c. invest more energy in parenting than do placental animals. d. produce more gametes than do those animals with external fertilization and development. e. All of the above are correct. 4. Which of the following produce testosterone? a. sperm cells b. hypothalamus c. Leydig cells d. anterior pituitary e. seminiferous tubules 5. After sperm cells are produced, they are mainly stored in the a. urethra. b. prostate. c. epididymis. d. seminal vesicles. e. bulbourethral gland. 6. In men, the excretory and reproductive systems share which structure? a. vas deferens b. urinary bladder c. seminal vesicle d. urethra e. ureter 7. Which of these does not contribute to the fluids that make up human semen? a. bulbourethral glands b. vas deferens c. prostate gland d. seminal vesicles e. both A and B
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8.
What effect would surgical removal of the seminal vesicles have on the human male reproductive system? a. It would cause sterility because sperm would not be produced. b. It would cause sterility because sperm would not be able to exit the body. c. The failure rate for the withdrawal method of birth control would go down. d. There would be a minimal loss in semen volume. e. Semen would not contain energy-providing nutrients for the sperm. 9. In humans, the egg is released from the ovary and enters the oviduct. How is this accomplished? a. The force of the follicular ejection propels the egg into the oviduct. b. The egg is drawn into the oviduct by the action of beating cilia located in the opening of the oviduct. c. The egg moves through a small tube that connects the ovary and the oviduct. d. The egg propels itself into the oviduct by the beating action of its flagellum. e. Peristalsis of ovarian muscles moves the egg into the oviduct. 10. What is the narrow opening of the human uterus called? a. vagina b. cervix c. oviduct d. fallopian tube e. vas deferens 11. Which cells are diploid? a. spermatids b. spermatogonia c. mature sperm cells d. A and B only e. A, B, and C 12. Which of these best describes the menstrual cycle? a. It refers specifically to changes that occur in the endometrium of the uterus. b. The cycle length is 28 days and varies little from one woman to another. c. It continues from puberty until death. d. It begins with the follicular phase. e. It is primarily regulated by follicle-stimulating hormone (FSH). 13. What are the three phases of the ovarian cycle? a. menstrual, ovulation, and luteal b. follicular, luteal, and secretory c. menstrual, proliferative, and secretory d. follicular, ovulation, and luteal e. proliferative, luteal, and ovulation 14. Inhibition of the release of GnRH from the hypothalamus will a. stimulate production of estrogen and progesterone. b. initiate ovulation. c. inhibit secretion of gonadotropins from the pituitary.
d. stimulate secretion of LH and FSH. e. initiate the flow phase of the menstrual cycle. 15. If the release of LH were inhibited in a human female, which of the following events would not occur? a. release of FSH from the pituitary b. maturation of a primary follicle and oocyte c. ovulation of a secondary oocyte d. release of GnRH from the hypothalamus e. production of estrogen by follicle cells
____ 16. One function of the corpus luteum is to a. nourish and protect the egg cell. b. produce prolactin in the alveoli. c. produce progesterone and estrogen. d. convert into a hormone-producing follicle after ovulation. e. stimulate ovulation. ____ 17. hormone that triggers ovulation a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 18. hormone secreted by the growing follicle a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 19. stimulates the corpus luteum in females a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 20. hypothalamic hormone that stimulates the secretion of gonadotropins by the anterior pituitary a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 21. the anterior pituitary hormone that stimulates the maturation of the follicle in the ovary during the beginning of the menstrual cycle a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 22. What happens if the hormone progesterone is not secreted in a human female? a. Secondary sex characteristics do not develop. b. The pituitary is stimulated to secrete gonadotropins. c. Uterine contractions begin stimulating childbirth. d. Growth of endometrial glands do not occur properly. e. The ovary begins to form the corpus luteum. ____ 23. Fertilization of human eggs usually takes place in the a. ovary. b. uterus. c. vagina. d. oviduct. e. labia minora.
____ 1. Which of the following are possible advantages of asexual reproduction? a. It allows the species to endure periods of fluctuating or unstable environmental conditions. b. It enhances genetic variability in the species. c. It enables the species to colonize new regions rapidly. d. Both A and B are true. e. A, B, and C are true. 2. Why is sexual reproduction important? a. It allows animals to conserve resources and reproduce only during optimal conditions. b. The resulting diverse phenotypes may enhance survival of a population in a changing environment. c. It can result in numerous offspring in a short amount of time. d. It enables isolated animals to colonize a habitat rapidly. e. Both A …show more content…
and D are important. 3. Organisms that produce amniote eggs, in general, a. have a higher embryo mortality rate than do those with unprotected embryos. b. invest most of their reproductive energy in the embryonic and early postnatal development of their offspring. c. invest more energy in parenting than do placental animals. d. produce more gametes than do those animals with external fertilization and development. e. All of the above are correct. 4. Which of the following produce testosterone? a. sperm cells b. hypothalamus c. Leydig cells d. anterior pituitary e. seminiferous tubules 5. After sperm cells are produced, they are mainly stored in the a. urethra. b. prostate. c. epididymis. d. seminal vesicles. e. bulbourethral gland. 6. In men, the excretory and reproductive systems share which structure? a. vas deferens b. urinary bladder c. seminal vesicle d. urethra e. ureter 7. Which of these does not contribute to the fluids that make up human semen? a. bulbourethral glands b. vas deferens c. prostate gland d. seminal vesicles e. both A and B
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____
____
____
____
____
____
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8.
What effect would surgical removal of the seminal vesicles have on the human male reproductive system? a. It would cause sterility because sperm would not be produced. b. It would cause sterility because sperm would not be able to exit the body. c. The failure rate for the withdrawal method of birth control would go down. d. There would be a minimal loss in semen volume. e. Semen would not contain energy-providing nutrients for the sperm. 9. In humans, the egg is released from the ovary and enters the oviduct. How is this accomplished? a. The force of the follicular ejection propels the egg into the oviduct. b. The egg is drawn into the oviduct by the action of beating cilia located in the opening of the oviduct. c. The egg moves through a small tube that connects the ovary and the oviduct. d. The egg propels itself into the oviduct by the beating action of its flagellum. e. Peristalsis of ovarian muscles moves the egg into the oviduct. 10. What is the narrow opening of the human uterus called? a. vagina b. cervix c. oviduct d. fallopian tube e. vas deferens 11. Which cells are diploid? a. spermatids b. spermatogonia c. mature sperm cells d. A and B only e. A, B, and C 12. Which of these best describes the menstrual cycle? a. It refers specifically to changes that occur in the endometrium of the uterus. b. The cycle length is 28 days and varies little from one woman to another. c. It continues from puberty until death. d. It begins with the follicular phase. e. It is primarily regulated by follicle-stimulating hormone (FSH). 13. What are the three phases of the ovarian cycle? a. menstrual, ovulation, and luteal b. follicular, luteal, and secretory c. menstrual, proliferative, and secretory d. follicular, ovulation, and luteal e. proliferative, luteal, and ovulation 14. Inhibition of the release of GnRH from the hypothalamus will a. stimulate production of estrogen and progesterone. b. initiate ovulation. c. inhibit secretion of gonadotropins from the pituitary.
d. stimulate secretion of LH and FSH. e. initiate the flow phase of the menstrual cycle. 15. If the release of LH were inhibited in a human female, which of the following events would not occur? a. release of FSH from the pituitary b. maturation of a primary follicle and oocyte c. ovulation of a secondary oocyte d. release of GnRH from the hypothalamus e. production of estrogen by follicle cells
____ 16. One function of the corpus luteum is to a. nourish and protect the egg cell. b. produce prolactin in the alveoli. c. produce progesterone and estrogen. d. convert into a hormone-producing follicle after ovulation. e. stimulate ovulation. ____ 17. hormone that triggers ovulation a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 18. hormone secreted by the growing follicle a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 19. stimulates the corpus luteum in females a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 20. hypothalamic hormone that stimulates the secretion of gonadotropins by the anterior pituitary a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 21. the anterior pituitary hormone that stimulates the maturation of the follicle in the ovary during the beginning of the menstrual cycle a. LH b. FSH c. ICSH d. GnRH e. estrogen ____ 22. What happens if the hormone progesterone is not secreted in a human female? a. Secondary sex characteristics do not develop. b. The pituitary is stimulated to secrete gonadotropins. c. Uterine contractions begin stimulating childbirth. d. Growth of endometrial glands do not occur properly. e. The ovary begins to form the corpus luteum. ____ 23. Fertilization of human eggs usually takes place in the a. ovary. b. uterus. c. vagina. d. oviduct. e. labia minora.