Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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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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Observation of the development of embryos in sea stars shows the mesoderm forming pouches bulging from the archenteron to form the coelom. From this observation, you can predict that
A.
the cleavage of the embryo is radial.
B.
the adult animal will have bilateral symmetry.
C.
the mouth forms from the first opening in the gastrula.
D.
the animal is diploblastic.
Which 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.
Which 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.
Chapter 47 Solutions
Study Guide for Campbell Biology
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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- 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_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_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
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- You find a flatworm during a field trip and discover that the embryos undergo spiral cleavage. What also must be true of this animal? (can be more than one anwser) E. regulative development B. mosaic development C. it is acoelomate D. All of these A. bilateral symmetryarrow_forwardThe zona pellucida is important in mammals because it... a. induces polyspermy. b. induces compaction. c. inhibits implantation of the embryo until the embryo reaches the uterus. d. inhibits the formation of twins.arrow_forwardWhich of the following statements relating to axis formation in chickens is FALSE? a. Henson's node secretes proteins that antagonize BMPs. b. The side of the epiblast facing the negative, basic albumin will become the ventral side of the embryo. c. Cells of the posterior marginal zone secrete Nodal to initiate the primitive streak. d. Water and sodium ions are transported from the albumin through the blastodisc cells and into the subgerminal space.arrow_forward
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