Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 47, Problem 6TYK
Summary Introduction
Introduction: Fertilization is the process that involves the fusion of male and female gamete, which forms a zygote. The zygote undergoes cleavage which further develops into an embryo. Different animals have different developmental stages. For example, in mammals, the zygote undergoes cleavage and form 8-cell stage, 16-cell stage, blastula, gastrula, and many more.
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Chapter 47 Solutions
Biology - Study Guide
Ch. 47 - a. What assures that only a sperm of the correct...Ch. 47 - Prob. 2IQCh. 47 - Prob. 3IQCh. 47 - Prob. 4IQCh. 47 - Label the indicated structures in the following...Ch. 47 - Prob. 6IQCh. 47 - Prob. 7IQCh. 47 - Prob. 1SYKCh. 47 - Fill in the following table, briefly describing...Ch. 47 - Prob. 1TYK
Ch. 47 - Prob. 2TYKCh. 47 - The blastocoel a. develops into the archenteron or...Ch. 47 - In a frog embryo, gastrulation a. is slowed by the...Ch. 47 - Prob. 5TYKCh. 47 - Prob. 6TYKCh. 47 - Prob. 7TYKCh. 47 - Prob. 8TYKCh. 47 - To which portion of the developing embryo do cells...Ch. 47 - Prob. 10TYKCh. 47 - Prob. 11TYKCh. 47 - Prob. 12TYKCh. 47 - Use the following diagram of a chick embryo for...Ch. 47 - During gastrulation in the frog embryo, a new...Ch. 47 - Gastrulation and organogenesis in mammals most...Ch. 47 - Prob. 16TYKCh. 47 - Prob. 17TYKCh. 47 - Prob. 18TYKCh. 47 - Prob. 19TYKCh. 47 - Prob. 20TYK
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- Which 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_forwardWhich statement is true of Spemann’s organizer?a. It is unique to amphibian embryos.b. It arises early in cleavage-stage embryos.c. It secretes morphogens, including the protein called noggin.d. It is found in the dorsal lip region of early gastrula-stageembryos.e. Both c and d are true of Spemann’s organizer.arrow_forwardWhich of the following is not true about avian eggs? Choose all possible answers. a. exhibit holoblastic cleavage b. first cleavages are perpendicular to the plane of the blastodisc, and approximately at right angles to one another c. at the time of the fourth cleavage, a furrow running parallel to the circumference of the blastodisc separates central from peripheral forming blastomeres. d. portion of the undersurface of the blastoderm that is farthest from the source of gravity becomes the anterior end of the embryo. e. All of the following are true about eggs of frogs.arrow_forward
- What structural adaptation in chickens allows them to lay theireggs in arid environments rather than in water?(A) extraembryonic membranes(B) yolk(C) cleavage(D) gastrulationarrow_forwardAlong the notochord, segmented blocks of tissue that give rise to muscles, vertebrae, and connective tissues are calleda. neural crests.b. morulas.c. primitive streaks.d. somitesarrow_forwardThe ribs form from the ________. a. notochord b. neural plate c. neural tube d. somitesarrow_forward
- What is NOT true about embryo development? A. a morula is an earlier stage than a gastrula B. Gatrulation creates endoderm and ectoderm in most animals C. Mammal blastulas are called blastocysts due to the thickened area where the embryo develops D. diploblastic animals have mesodermarrow_forwardThe evolution of the three germ layers ( ectoderm, mesoderm, endoderm) in the evolution of complex animals is associated with the Annelids ( Earth worm), the mollusk (clam), and the Cordata (the vertebrates) which are examples of? A) Protostomes and Deuterostomes B) Just the protostomes C) Only the Deuterostomes D) Cnideria E) Proifera Explain whyarrow_forwardWhat is a potential result of injecting notochord tissue into the ventral (bottom) region of the mesoderm of a frog embryo. Group of answer choices A. a tadpole with no dorsal surface B. a tadpole with reversed legs C. a tadpole that never becomes an adult D. a tadpole with two spinal cords and brainsarrow_forward
- What are the correct pairings of developing and embryonic structures in the gastrulation of chickens? Multiple answers is possible. If no correct option is given write the proper pairings. a. Epiblast – ectoderm b. Secondary hypoblast – endoderm c. Primary hypoblast – endoderm d. Migrating cells - mesodermarrow_forwardwhat characteristics are shared among bird embryos, pig embryos, and human embryos?arrow_forwardIn Deuterostomes, nutrient molecules (monomers) are taken in to the space between the endoderm and the ectoderm because... A) The ectoderm makes protein for movement B) The endoderm cells release hydrolytic enzymes that act on polymers C) The endoderm releases enzymes that conduct dehydration synthesis of proteins D) mRNA polymerase causes hydrolysis of DNA E) All are correct Explain whyarrow_forward
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