Biology (Raven), 9th Edition

Chapter 53: The Reproductive System

Post-Test

1
Cnidaria commonly reproduce by
A)budding.
B)fission.
C)parthenogenesis.
D)hermaphroditism.
E)metamorphosis.
2
For how long are the embryonic gonads of mammals sexually "indifferent"?
A)about 4 days
B)about 40 days
C)about 4 months
D)about 4 years
E)until puberty
3
The first vertebrates to engage in sexual reproduction were
A)primitive terrestrial vertebrates.
B)advanced terrestrial vertebrates.
C)primitive marine vertebrates.
D)advanced marine vertebrates.
E)None of these is correct.
4
Internal fertilization evolved in terrestrial vertebrates due to strong selective pressure for which of the following?
A)gametes to be released close to each other
B)fetuses to be kept warm, moist, nourished, and protected inside the mother
C)the simultaneous release of gametes
D)gametes to be kept in a nondesiccating environment
E)fetuses to be fully developed before birth
5
Which of the following animals obtain milk from their mother by licking her skin?
A)a dog
B)a duck-billed platypus
C)a kangaroo
D)a frog
E)none of these
6
Parthenogenesis is a form of reproduction found in some animals that has the following feature(s):
A)all individuals in the population are male.
B)offspring arise from unfertilized eggs.
C)it only occurs in bees.
D)it is a type of sexual reproduction.
E)all of these
7
One strategy adopted by some vertebrates for embryonic development is ovoviviparity. In this strategy:
A)fertilized eggs are retained within the mother.
B)nourishment of the embryo comes from the egg.
C)the young are not fully developed when they hatch.
D)both fertilized eggs are retained within the mother and nourishment of the embryo comes from the egg.
E)all of these.
8
In human males sperm are produced in the _________ by division of _________ with the aid of _________ cells.
A)seminiferous tubules/spermatogonia/Sertoli
B)sperm ducts/Sertoli/spermatogonia
C)seminiferous tubules/spermatocytes/Sertoli
D)seminiferous tubules/spermatogonia/Sertoli
E)epididymis/spermatogonia/Sertoli
9
In human oogenesis the first meiotic division results in a ________ and the _______ oocyte, which is ________.
A)polar body/secondary/diploid
B)polar body/secondary/haploid
C)polar body/primary/haploid
D)germinal cell/primary/diploid
E)none of the above
10
Oral contraceptive pills taken by women contain analogues of _______ that inhibit the secretion of _____ and _____.
A)estrogen/FSH/LH
B)progesterone/FSH/GnRH
C)progesterone/FSH/LH
D)progesterone/estradiol/LH
E)none of the above
11
In humans the presence of the SRY gene causes:
A)the indifferent gonads to develop into ovaries.
B)the indifferent gonads to develop into testes.
C)the secretion of testosterone from the testes.
D)the secretion of estrogen from the ovaries.
E)none of the above
12
Why are rabbits and cats particularly fertile compared to other mammals?
A)They have multiple births with large litters.
B)They have short gestation periods.
C)Females have a short estrus cycle.
D)The females only ovulate after copulation.
E)All of these.
13
What would happen in a male if FSH receptors on the Sertoli cells were blocked with a competitive inhibitor?
A)The secretion of testosterone would decrease.
B)The secretion of FSH would increase.
C)The secretion of FSH would decrease.
D)The secretion of LH would increase.
E)The secretion of GnRH would decrease.
14
In the human female ovarian cycle, increasing levels of _____ in the blood stimulate the _______ follicle to release its _______ oocyte.
A)FSH/Graffian/secondary
B)LH/Graffian/primary
C)LH/primary/secondary
D)LH/Graffian/secondary
E)none of these
15
The drug clomiphine is a competitive inhibitor of the estrogen receptor. This:
A)is a treatment for female infertility.
B)is a method of contraception.
C)increases FSH and LH production.
D)decreases progesterone production.
E)both is a treatment for female infertility and increases FSH and LH production.
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