Chapter 42 Pre Class Quiz History for Chapter 42 Pre Class Assignment Item Chapter 42 Pre Class Assignment Score 100 Calculated Due Thursday October 30 2014 7 59 AM Submitted Tuesday October 28 2014 10 17 AM Answers 1 Komodo dragons Varanus komodoensis are an endangered species One of the aspects of their management for long term conservation is captive breeding programs in zoos Typically females are housed alone and males are transported between zoos to mate with females and produce offspring In some cases females produced offspring even though they were not in contact with a male Which term below best describes the production of offspring by female Komodo dragons housed alone in zoos asexual reproduction fission budding parthenogenesis 2 Komodo dragons Varanus komodoensis are an endangered species One of the aspects of their management for long term conservation is captive breeding programs in zoos Typically females are housed alone and males are transported between zoos to mate with females and produce offspring In some cases females produced offspring even though they were not in contact with a male True or false When females were not exposed to males yet produced offspring reproduction was asexual true false 3 Consider the transition from water to land for plants Reproduction that was not tied to water was an important adaptation allowing plants to exploit truly terrestrial habitats Animals faced the same challenge when moving from water to land What was the single most important adaptation that led to the uncoupling of reproduction and the need for water amniotic egg internal fertilization loss of flagellated sperm 4 The production of eggs in females is a coordinated process involving hormone production and release from multiple regions in the body Is the following statement true regarding hormones of the female reproductive system Failure of fertilization of the oocyte causes a decrease in progesterone and estradiol and signals the end of the follicular phase of the menstrual cycle 5 In humans sex determination is genetic Specifically it depends on the presence or absence of the gene residing on the chromosome The gene produces a protein called which causes the developing gonad to differentiate true false SRY Y TDF SRY X TDF TDF X SRY TDF Y SRY SRY largest TDF true false they developed uterus cervix vagina ovary fallopian tube or oviduct 6 True or false External fertilization is generally associated with large numbers of offspring and low levels of parental care 7 Through which structure do oocytes travel as they leave the location where 8 A key difference between hormonal regulation of the reproductive systems of males and females is that LH and FSH are released only in females LH and FSH are released only in males LH and FSH are released cyclically in females but nearly continuously in males LH is released in males and FSH is released in females LH is released continuously in males and FSH is released cyclically in females 9 produces genetically identical cells or individuals called clones Sexual reproduction Asexual reproduction Meiosis Fertilization Sexual reproduction Asexual reproduction Binary fission Parthenogenesis Progesterone Estrogen Testosterone Oxytocin 10 involves combining genetic information from two individuals to make a new genetically unique individual 11 The key hormone of childbirth is which is released from the posterior pituitary gland It stimulates uterine contractions which in turn stimulate more of it to be released 12 Gametes or spores are produced during the cellular process referred to as 13 Once the plasma membranes of the egg and sperm fuse the egg completes meiosis II and undergoes a series of changes that prevent or fertilization by more than one sperm 14 Together the membranes of the amniotic egg are called the membranes 15 The fusion of gametes resulting in the formation of a zygote is called Mitosis Meiosis Fertilization Pathenogenesis Polyspermy Fertilization Gametogenesis Gastrulation Aminotic Vernalized Extraembryonic Extrapolygenic parthenogenesis gametogenesis gastrulation polyspermy fertilization 16 Sperm are produced in the tubules of the testes seminal vesicles seminiferous tubules vas deferens bulbourethral glands Close
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