Review Questions

4. Which form of reproduction is thought to be best in a stable environment?

  1. asexual
  2. sexual
  3. budding
  4. parthenogenesis

5. Which form of reproduction can result from damage to the original animal?

  1. asexual
  2. fragmentation
  3. budding
  4. parthenogenesis

6. Which form of reproduction is useful to an animal with little mobility that reproduces sexually?

  1. fission
  2. budding
  3. parthenogenesis
  4. hermaphroditism

7. Genetically unique individuals are produced through ________.

  1. sexual reproduction
  2. parthenogenesis
  3. budding
  4. fragmentation
8. External fertilization occurs in which type of environment?

  1. aquatic
  2. forested
  3. savanna
  4. steppe
9. Which term applies to egg development within the female with nourishment derived from a yolk?

  1. oviparity
  2. viviparity
  3. ovoviviparity
  4. ovoviviparity
10. Which term applies to egg development outside the female with nourishment derived from a yolk?

  1. oviparity
  2. viviparity
  3. ovoviviparity
  4. ovoviviparity
11. Sperm are produced in the ________.

  1. scrotum
  2. seminal vesicles
  3. seminiferous tubules
  4. prostate gland
12. Most of the bulk of semen is made by the ________.

  1. scrotum
  2. seminal vesicles
  3. seminiferous tubules
  4. prostate gland
13. Which of the following cells in spermatogenesis is diploid?

  1. primary spermatocyte
  2. secondary spermatocyte
  3. spermatid
  4. sperm
14. Which organ has the same embryonic origin as the penis?

  1. clitoris
  2. labia majora
  3. greater vestibular glands
  4. vagina
15. Which organ has an endometrial lining that will support a developing baby?

  1. labia minora
  2. breast
  3. ovaries
  4. uterus
16. How many eggs are produced as a result of one meiotic series of cell divisions?

  1. one
  2. two
  3. three
  4. four
17. Which hormone causes Leydig cells to make testosterone?

  1. FSH
  2. LH
  3. inhibin
  4. estrogen
18. Which hormone causes FSH and LH to be released?

  1. testosterone
  2. estrogen
  3. GnRH
  4. progesterone
19. Which hormone signals ovulation?

  1. FSH
  2. LH
  3. inhibin
  4. estrogen
20. Which hormone causes the regrowth of the endometrial lining of the uterus?

  1. testosterone
  2. estrogen
  3. GnRH
  4. progesterone
21. Nutrient and waste requirements for the developing fetus are handled during the first few weeks by:

  1. the placenta
  2. diffusion through the endometrium
  3. the chorion
  4. the blastocyst
22. Progesterone is made during the third trimester by the:

  1. placenta
  2. endometrial lining
  3. chorion
  4. corpus luteum
23. Which contraceptive method is 100 percent effective at preventing pregnancy?

  1. condom
  2. oral hormonal methods
  3. sterilization
  4. abstinence
24. Which type of short term contraceptive method is generally more effective than others?

  1. barrier
  2. hormonal
  3. natural family planning
  4. withdrawal
25. Which hormone is primarily responsible for the contractions during labor?

  1. oxytocin
  2. estrogen
  3. β-HCG
  4. progesterone
26. Major organs begin to develop during which part of human gestation?

  1. fertilization
  2. first trimester
  3. second trimester
  4. third trimester
27. Which of the following is false?

  1. The endoderm, mesoderm, ectoderm are germ layers.
  2. The trophoblast is a germ layer.
  3. The inner cell mass is a source of embryonic stem cells.
  4. The blastula is often a hollow ball of cells.
28. During cleavage, the mass of cells:

  1. increases
  2. decreases
  3. doubles with every cell division
  4. does not change significantly
29. Which of the following gives rise to the skin cells?

  1. ectoderm
  2. endoderm
  3. mesoderm
  4. none of the above
30. The ribs form from the ________.

  1. notochord
  2. neural plate
  3. neural tube
  4. somites

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Biology 2e for Biol 111 and Biol 112 Copyright © 2023 by Mary Ann Clark; Jung Choi; and Matthew Douglas is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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