Exam #4 - BI 1110 (ZOOLOGY) - EXAM 4 - STUDY GUIDE COVERAGE...

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BI 1110 (ZOOLOGY) -- EXAM 4 -- STUDY GUIDE COVERAGE Reproduction and Development (Ch. 29); Body Covering (Ch. 23); Digestion (Ch. 27); Excretion (Ch. 28). You are responsible for everything in lecture and on your own items from text. If it is not covered in lecture or specified from the book, you do not need to know it. SHORT DISCUSSION, LISTINGS (about 1/4 page or less) Reproduction draw and label a sperm check attached paper fertilization process 1.Chemo attractant- it tells the sperm where to go 2.Acrososomal reaction- digests egg membrane 3.Egg permeability increases and changes polarity 4.Acrosomal process penetrates vitelline envelope 5.Egg extends fertilization cone- Extension to grab the sperm cell to guide it to the egg cell. 6.Cell membrane unite 7.Sperm head drawn into egg ( mid-piece and tail is excluded) 8.Zygote forms adaptations -- internal fertilization 1.Reduction in number of gametes 2.Sperm storage a. Female- seminal receptacle b. Male- seminal vesicle 3. Modification of Terminal Gonoduct for copulation a. Penis from sperm duct Page 1
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b. Vagina from oviduct adaptations -- external fertilization 1.Large number of expendable gametes 2.Natural/ Ventilation/ feeding currents to disperse gametes 3.Favorable habitat 4.Swarming 5.Amplexus- close proximity and union without copulation 6.Pheromones 7.Simple Reproduction tracts for gametes expulsion adaptations -- reproductive synchrony 1.Gametes produced at same time 2.Gametes released at same time 3.Both gamete production and release a. Usually seasonal b. Environmental cues c. Palolo worms d. Grunion e. Gametes of one sex stimulate release of other f. Courtship i.Decreases aggression Page 2
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ii.Establishes sex and species identities g. Copulation stimulates ovulation male mammalian reproductive tract anatomy a. testes* (seminiferous tubules* produce sperm) b. rete testis* c. epididymis* (storage and maturation of sperm) d. vas deferens* (sperm duct) e. urethra* (urine/semen) (partially within penis) female mammalian reproductive tract anatomy a. ovaries b. eggs shed in coelom c. ostium of oviduct d. fallopian tube* (fertilization occurs) e. uterus* (often y-shaped: 2 horns) 1) fertilized egg implants 2) embryo connected by placenta and umbilical cord f. cervix* (uterine opening) g. vagina* h. (separate openings - reproductive, urinary systems) i. external 1) labia majora* (scrotum homologue) 2) labia minora* and clitoris* (penis homologues) Page 3
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3) hymen* components of semen with functions types of asexual/sexual reproduction with definitions 1. Asexual* a. binary fission* 1) longitudinal or transverse 2) common in Protista (Protozoa) 3) some flatworms b. multiple fission* (sporulation) 1) orderly division 2) some sea anemones, annelids c. fragmentation* 1) random division 2) sponges, flatworms, annelids, echinoderms 3) autotomy* -- self-amputation a) crustaceans, echinoderms, flatworms b) pedal laceration - sea anemones d. budding* 1) external/internal 2) cnidarians (Hydra), sponges Page 4
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e. polyembryony -- division of fertilized egg into clones
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This note was uploaded on 12/01/2010 for the course ANTHROP[OL 1101 taught by Professor Marris during the Spring '10 term at Averett Unversity.

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Exam #4 - BI 1110 (ZOOLOGY) - EXAM 4 - STUDY GUIDE COVERAGE...

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