Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 7, Problem 1FFT
Fish and amphibians tend to have less complex reproductive systems than those of some reptiles, birds, and mammals. Why do you think this might be the case?
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Students have asked these similar questions
We discussed environmental sex determination in reptiles, where the sex of the
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Chapter 7 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 7 - Define asexual reproduction, and describe four...Ch. 7 - Prob. 2RQCh. 7 - Explain why genetic mutations in asexual organisms...Ch. 7 - Define the two reproductive strategies of...Ch. 7 - Define the terms dioecious and monoecious. Can...Ch. 7 - Prob. 6RQCh. 7 - What is a germ-cell line? How do germ cells pass...Ch. 7 - Explain how a spermatogonium, containing a diploid...Ch. 7 - Prob. 9RQCh. 7 - Name the general location and give the function of...
Ch. 7 - Prob. 11RQCh. 7 - What are the male sex hormones and what are their...Ch. 7 - Explain how the female hormones GnRH, FSH, LH, and...Ch. 7 - Explain the function of the corpus luteum in the...Ch. 7 - Describe the role of pregnancy hormones during...Ch. 7 - If identical human twins develop from separate...Ch. 7 - Fish and amphibians tend to have less complex...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Oviparity is the rule in the animal kingdom. It is common in insects, fishes, amphibians, and reptiles, and universal in birds. Among mammals, the most primitive species (the echidna and the platypus) are also oviparous. However, all mammals that evolved later (marsupials and placentals) are viviparous. What do you think was responsible for this major shift in reproductive strategy?arrow_forwardWhy is sexual reproduction useful if only half the animals can produce offspring and two separate cells must be combined to form a third?arrow_forwardHow do different types of energy investment by females contribute to the reproductive success of a frog, a chicken, and human? Drag the appropriate items to their respective bins. Reset Help embryos have gelatinous coat and lack internal membranes internal fertilization external fertilization embryos have internal membrane invest energy to the protection of their embryos by strong shells invest energy to the gamete production invest energy to the protection of their embryos by internal development Frog Chicken Humanarrow_forward
- in your own words: Compare the reproductive organs of reptiles and birds. How are their reproductive patterns advantageous for their survival?arrow_forwardLarge testes are probably advantageous in species with sperm competition because larger testes produce more sperm which increses males' probability of fertilization females choose males based on testes size more testosterone production increases fighting ability of males larger testes produce larger sized sperm which have a competitive advantage over other spermarrow_forwardWhich of the following are mismatched? (a) endoderm; lining of the digestive tube (b) ectoderm; circulatory system (c) mesoderm; notochord (d) mesoderm; reproductive system (e) ectoderm; sense organsarrow_forward
- Describe a two-year cycle in the life of an adult female gray whale by answering the specific questions below. Where do they mate and give birth? How often do they give birth? Where do they spend the non-breeding season? (Note this is also where they eat because they don’t typically feed during migration or on their breeding waters.) When do they migrate south along the Oregon Coast? When do they migrate north along the Oregon Coastarrow_forwardWhy Do So Many Animals Reproduce Sexually Rather than Asexually?arrow_forwardAnimals attract mates through a variety of behaviors. Diurnal animals tend to rely on visual cues, while nocturnal ones make frequent use of pheromones. In recent years, environmental pollutants called endocrine disruptors are on the rise. Such chemicals mimic hormones in higher-order animals and interfere with the reproductive cycle. Which animal’s reproduction would be most seriously affected in the presence of endocrine disruptors? rats bees fireflies fiddler crabsarrow_forward
- Mate guarding is an evolved response to sperm competition. Chimpanzee (Pan troglodytes) females regularly mate with several males in the same estrous cycle, whereas gorilla (Gorilla gorilla) females almost never do, since they typically live in bands, each controlled by a single, powerful male. How large (as a proportion of body size) should the testes of chimpanzee males be relative to gorilla testes (Harcourt et al. 1981)? If the testes of men are more similar to those of chimpanzees, what would this tell us about the intensity of sperm competition during our evolutionary past? If, on the other hand, human testes resemble those of gorillas, what conclusion is justified? Please don't write from any online source.arrow_forwardWhy is it immoral to culture headless embryos when in fact it can help to help people who need organ donors?arrow_forwardWhich statement below is FALSE regarding the differences between sea urchin and mammals? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a External fertilization is observed in sea urchins, whereas internal fertilization is used in mammals. External fertilization is observed in mammals, whereas internal fertilization is used in sea urchins. Urchins produce thousands of eggs, whereas humans produce only one egg that when fertilized becomes a zygote. Once sea urchins release their gametes, they move on to feeding on other normal activities and do not worry about their progeny at all. Unanswered A Submitarrow_forward
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