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…
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.
____ 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…
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.