Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 47, Problem 5TYU
Summarize the experimental evidence that Daphnia require three cues to trigger sexual reproduction. Discuss what these cues indicate about the environment.
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Asexual reproduction does exist with numerous unique adaptations, but it is normally sexual with both male and female sexes.
a) Describe the different types of parthenogenesis and give an example of each type of insect.
b) List and briefly describe four important elements that affect a female's ability to generate eggs and the amount of eggs that are oviposited.
Describe the similarities and differences in the sexual reproduction of the following: Ulothrix and Spirogyra.
Reproduction is usually sexual with both male and female sexes, however asexual reproduction does exist with several unique adaptations.
b) Enumerate and briefly explain four major factors that influence the ability of the female to produce eggs and the number that are oviposited.
Chapter 47 Solutions
Biological Science (7th Edition)
Ch. 47 - Prob. 1TYKCh. 47 - Prob. 2TYKCh. 47 - Prob. 4TYKCh. 47 - Summarize the experimental evidence that Daphnia...Ch. 47 - Prob. 6TYUCh. 47 - 7. How do spermatogenesis and oogenesis in humans...Ch. 47 - 8. Give examples of negative feedback and positive...Ch. 47 - Prob. 9TYPSSCh. 47 - Prob. 11PIATCh. 47 - Prob. 12PIAT
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- Reproduction is usually sexual with both male and female sexes, however asexual reproduction does exist with several unique adaptations. a) Discuss comprehensively the types of parthenogenesis and give an example of insect of each type.arrow_forwardBriefly explain post zygotes barriers to reproduction and list an example.arrow_forwardDescribe how the reproductive structures of each organism are adapted towards the given characteristics of the animals: 1. Parasitic lifestyle of Taenia solium 2. Vermiform body of the Ascaris suum 3. Absence of intromittent organ in Pheretima 4. Solitary and slow-moving lifestyle of Lissachatina fulica 5. Saltatory mode of life in Rhinella marina 6. Temperature regulation of mammalian sperm cell productionarrow_forward
- Give specific reasons (at least 3) why Caenorhabditis elegans have been used by scientists worldwide as a model organism to study various physiological and developmental mechanisms.arrow_forwardMy college Bio teacher asked me this question in response to one of my photos I posted on Facebook: "I wonder why some birds exhibit sexual dimorphism while others do not." Can someone explain this phenomenom in detail?arrow_forwardA)Identify two differences (either structures or functions) between gills and lungs in terms of how oxygen is captured from the environment. B) Create a table that compares spermatogenesis and oogenesis. Include a bit of information about the hormonal control of reproduction in the comparison.arrow_forward
- With respect to nematode reproduction and reproductive structures, which of the following statements are true? (multiple answers) a) parasitic species have smaller eggs than free-living nematodes b) nematodes have amoeboid sperm c) parasites produce more eggs/day/female worm than free-living species d) ovoviviparous species produce eggs that hatch within the uterus, such that larvae are released from females Cuhmit Cuizarrow_forwardWhy does sexual reproduction present a special problem for burrowing or sessile animals and parasites such as tapeworm? A) Lack of available food resources B) Late sexual maturity C) Difficulty encountering a member of the opposite sex D) Temperature of the environmentarrow_forwardRead following statements A and B and choose the correct option. Statement-A : Taenia is triploblastic, acoelomate having solid mesoderm and alimentary canal is absent. Statement-B : In Planaria, fertilization is external, indirect development through many larval stages and possess low regeneration capacity. a.Only statement A is correct b.Only statement B is correct c.Both statements A and B are correct d.Both statements A and B are incorrectarrow_forward
- Describe and label a nematocyst and the cell containing it. Describe how nematocysts fire. How does the firing mechanism and structure vary phylogenetically [among classes]?arrow_forwardReproduction is usually secual with both male and female sexes, however asexual reproduction does exist with several unique adaptations. Enumerate and explain four major factors that influence the ability of female to produce eggs and the number that are oviposited.arrow_forwardThe species Taenia saginata is a parasitic worm of humans. The parasite's life cycle is as follows: Hermaphroditic adults live in the small intestine cavity of an infected human. The adult worm consists of rings that are produced in the anterior region of the worm, in which there is production of male gametes which fertilize female gametes then these rings (called proglottids) detach from the posterior end of the worm and exit in the external environment through the anus of the infected human. The eggs resulting from fertilization, present in the proglottids, are released and can infect a bovid if they are ingested along with grass. In the bovid, the developing eggs are particularly localized in the muscles of the bovid and turn into a shape called a cysticercus (each egg becomes a cysticercus). 1-Specify which species is the definitive host of the parasitic worm, justifying your answer 2- Specify the type of parasitism of this worm, justifying your answer 3-Specify which is (are) the…arrow_forward
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Reproduction: Crash Course Zoology #9; Author: CrashCourse;https://www.youtube.com/watch?v=poLyJDVjKlM;License: Standard youtube license