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This activity contains 51 questions.

Question 1
1
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Fertility drugs taken by women often result in multiple births because they __________.
 
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Question 2
2
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Which of the following is considered to be an advantage to asexual reproduction?
 
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Question 3
3
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A hermaphrodite is an animal that __________.
 
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Question 4
4
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How does a zygote differ from an egg?
 
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Question 5
5
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External fertilization occurs mostly in __________.
 
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Question 6
6
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In humans, the testes are located outside the abdominal cavity within the scrotum because _____.
 
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Question 7
7
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Which part of the male reproductive tract warehouses sperm before their exit from the male's body?
 
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Question 8
8
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What structure is part of both the excretory and reproductive systems in males?
 
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Question 9
9
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Where is one likely to find sperm without all the components of semen?
 
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Question 10
10
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How do ovulated oocytes get into the uterus?
 
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Question 11
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On its way to fertilize a human egg, a sperm cell does not have to pass through which of the following?
 
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Question 12
12
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After ovulation occurs, the empty follicle __________.
 
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Question 13
13
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The gamete of a female has _____ chromosomes compared to the gamete of the male.
 
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Question 14
14
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Meiosis to produce the female egg cell is initiated in the _____.
 
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Question 15
15
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From a single cell, oogenesis will produce __________.
 
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Question 16
16
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Assume 2n = 12 in a hypothetical species. In gametogenesis, the number of chromosomes in a developing sperm cell would be _____ and in a first polar body would be _____.
 
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Question 17
17
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In spermatogenesis, each primary spermatocyte gives rise to _____ sperm.
 
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Question 18
18
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Where do developing sperm cells undergo meiosis?
 
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Question 19
19
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What does an ovum have that the sperm also has?
 
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Question 20
20
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At what point does the secondary oocyte complete meiosis?
 
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Question 21
21
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The gamete of the female has _____ cytoplasm compared to the male gamete.
 
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Question 22
22
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The amount of cytoplasm found in an egg is _____ that found in the polar bodies.
 
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Question 23
23
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What is the source of the hormones that, when suddenly absent, are directly responsible for the onset of menstruation?
 
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Question 24
24
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Which is a true statement about luteinizing hormone in the female reproductive system?
 
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Question 25
25
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Which of the following hormones is the first to increase significantly every 28 days or so, initiating the ovarian cycle?
 
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Question 26
26
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If a woman wants to become pregnant, what is the optimal day on which to have sexual intercourse?
 
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Question 27
27
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A peak in _____ triggers ovulation around the _____ day of the monthly cycle.
 
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Question 28
28
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One early, and inexpensive, approach to infertility is to test a woman's urine for a hormone that would indicate a high probability of ovulation. What hormone is this test kit designed to detect?
 
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Question 29
29
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Pregnancy tests detect a hormone in a woman's urine that is present only when an embryo is developing in her uterus. This hormone is secreted by _____.
 
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Question 30
30
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Birth control pills contain synthetic estrogen and progesterone. How might these hormones prevent pregnancy?
 
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Question 31
31
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Which one of the following is the least effective method of birth control?
 
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Question 32
32
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A vasectomy is an effective technique for birth control in males because it __________.
 
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Question 33
33
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Which of the following most reduces the chances of both conception and the spread of sexually transmitted diseases?
 
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Question 34
34
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Sperm has several components; the function of the acrosome is to __________.
 
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Question 35
35
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During cleavage, the single large cell of the zygote is converted to a __________.
 
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Question 36
36
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Cell divisions called _____ proceed so rapidly in the developing embryo that there is no growth of the cells between divisions.
 
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Question 37
37
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One difference between the blastocyst and gastrula stages of development is that __________.
 
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Question 38
38
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Which one of the following describes the correct sequence of stages during embryogenesis?
 
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Question 39
39
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The nervous system is derived from __________.
 
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Question 40
40
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The heart and muscles form from the embryonic _____.
 
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Question 41
41
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What is the embryonic origin of the lining of the digestive system?
 
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Question 42
42
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Someone may have webbed toes because __________.
 
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Question 43
43
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The _____ is the precise site of embryo implantation in a normal pregnancy.
 
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Question 44
44
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Which one of the following is a function of the placenta?
 
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Question 45
45
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If you wanted to examine the extraembryonic membranes surrounding a human embryo, you would have to cut through which of the following to see all the others?
 
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Question 46
46
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During the second trimester __________.
 
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Question 47
47
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Which of the following describes the positive feedback that occurs during childbirth?
 
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Question 48
48
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Which one of the following is a typical cause of female infertility?
 
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Question 49
49
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Which one of the following is a correct statement about in vitro fertilization?
 
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Question 50
50
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Prior to implementation, what may be the difference between embryos that will lead to successful pregnancy and those that will not?
 
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Question 51
51
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How many great-grandchildren would a woman have to take care of to pass along as many of her genes to future generations as are present in just one of her children?
 
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