EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 34, Problem 6TY
Summary Introduction
Introduction:
The land animals gradually adapted to survive away from the water bodies for a longer duration. The most important change was the internal fertilization and development of an egg. The amniotic eggs have several membranes for nutrition, respiration, excretion, and protection of the developing embryo.
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The embryo proper develops from thea. inner cell mass.b. trophoblast.c. blastocele.d. yolk sac.
During the embryonic developmen, the trophoblast will developed into
Select one:
A. The embryonic disc
B. The chorion
C. The amnion and amniotic cavity
D. The yolk sac
In a reptile egg, the extraembryonic membrane thatencloses the embryo in a watery environment is thea. allantois.b. amnion.c. chorion.d. yolk sac.
Chapter 34 Solutions
EBK BIOLOGY
Ch. 34.1 - Prob. 1CCCh. 34.2 - Core Skill: Connections Are fish a monophyletic...Ch. 34.2 - What features distinguish ray- finned fishes from...Ch. 34.2 - Prob. 2CCCh. 34.3 - What were the advantages to animals of moving onto...Ch. 34.3 - What was the purpose of the study conducted by...Ch. 34.3 - Prob. 2EQCh. 34.3 - CoreSKILL Summarize the results of the...Ch. 34.3 - Prob. 1BCCh. 34.3 - Prob. 2CC
Ch. 34.4 - Prob. 1CCCh. 34.4 - Prob. 2CCCh. 34.4 - Core Skill: Connections Look ahead to Figure...Ch. 34.4 - Prob. 3CCCh. 34.5 - Prob. 1BCCh. 34.5 - Prob. 1CCCh. 34 - Which of the following is not a defining...Ch. 34 - Prob. 2TYCh. 34 - Prob. 3TYCh. 34 - Which clade does not include frogs? a. vertebrates...Ch. 34 - Prob. 5TYCh. 34 - Prob. 6TYCh. 34 - Prob. 7TYCh. 34 - Which of the following is not a distinguishing...Ch. 34 - Prob. 9TYCh. 34 - Prob. 10TYCh. 34 - Prob. 1CQCh. 34 - Prob. 2CQCh. 34 - Prob. 3CQCh. 34 - By what means can vertebrates move?Ch. 34 - Prob. 2COQ
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- During the embryonic development, the trophoblast will develop into Select one: a. the yolk sac b. the amnion and amniotic cavity c. the chorion d. the embryonic discarrow_forwardWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.arrow_forwardGiven these structures:(1) blastocyst (2) morula (3) zygoteChoose the arrangement that lists the structures in the order in whichthey form during development.a. 1,2,3 c. 2,3,1 e. 3,2,1b. 1,3,2 d. 3,1,2arrow_forward
- Odontoblasts are derived from a. Ectoderm b. Endoderm c. Histiocytes d. Undifferentiated mesenchymal cellsarrow_forwardWhich of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veinsarrow_forwardWhich of the following extra-embyonic membranes become the embryonic portion of the structure involved in waste and nutrient exchange between the embryo and the mother? Select one: A. Amnion B. york sac C. Chorion D. Allantoisarrow_forward
- Which of the following statements about gastrulation is correct? A. During gastrulation, the contents of cell nuclei begin to vary so that they can start to perform different fucntions. B. During gastrulation, cells differentiate so that they can start to perform different functions. C. The formation of the endoderm, mesoderm, and ectoderm occurs after gastrulation. D. The formation of the endoderm, mesoderm, and ectoderm occurs before gastrulation.arrow_forwardDuring morphogenesis, gastrulation does which of the following?A. Gastrulation produces the ectoderm through formation of a blastocyst.B. Gastrulation produces the mesoderm to form the lining of the digestive tract.C. Gastrulation provides the mechanisms whereby cells can form the neural tube.D. Gastrulation produces the endoderm through invagination of the blastula.arrow_forwardThe inner cell mass of a human blastocysta. gives rise to the chorion.b. gives rise to the placenta.c. gives rise to the embryo.d. consists of highly differentiated cells.arrow_forward
- Blood islands first form in the embryonic:- a. spleen. d. liver. b. yolk sac. e. red bone marrow. c. placentaarrow_forwardWhich molecules are released from the dorsal blastopore lip in the blastula-stage embryo? a. chordin, noggin, follistatin b. BMP4, BMP7, BMP2 c. sizzled, tolloid, dullard d. smad1, smad4, smurf1arrow_forwardWhich of the following statements is not true about the placenta? A. It provides exchange of wastes and nutrients between the mother and the fetus. B. It develops by the third month of gestation. C. It allows transfer of maternal immunoglobulin D. It allows passage of bacteria and virus. -Provide explanationarrow_forward
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