Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 32, Problem 4A
Which of the following cell layers is not necessary to be considered a eumetazoan?
a. Ectoderm
b. Endoderm
c. Mesoderm
d. All of the above are found in all eumetazoans.
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Which of the following cell layers is not necessary to be considered a eumetazoan?
a. Ectoderm
b. Endoderm
c. Mesoderm
d. All of the above are found in all eumetazoans.
Which 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.
Label each tissue with the specific source germ cells:
v Gastrointestinal tract
A. Intermediate mesoderm
v Superficial sensory organs
B. Ectoderm
v Notochord
C. Endoderm
D. Chordamesoderm
v Gonads
Chapter 32 Solutions
Biology
Ch. 32.1 - Prob. 1LOCh. 32.2 - Prob. 1LOCh. 32.2 - Prob. 2LOCh. 32.2 - Prob. 3LOCh. 32.3 - Prob. 1LOCh. 32.3 - Prob. 2LOCh. 32.3 - Prob. 3LOCh. 32.4 - Prob. 1LOCh. 32.4 - Prob. 2LOCh. 32.5 - Prob. 1LO
Ch. 32.5 - Prob. 2LOCh. 32.5 - Prob. 3LOCh. 32.6 - Prob. 1LOCh. 32.6 - Prob. 2LOCh. 32 - Prob. 1IQCh. 32 - Prob. 1UCh. 32 - Animals are unique in the fact that they possess...Ch. 32 - In animal sexual reproduction the gametes are...Ch. 32 - The evolution of bilateral symmetry was a...Ch. 32 - A fluid-filled cavity that develops completely...Ch. 32 - Which of the following statements is NOT true...Ch. 32 - Which of the following characteristics is used to...Ch. 32 - With regard to classification of animals, the...Ch. 32 - The coelom a. is a synapomorphy for the clade...Ch. 32 - A coelomate organism may have which of the...Ch. 32 - Which of the following cell types of a sponge...Ch. 32 - Prob. 12UCh. 32 - Prob. 13UCh. 32 - The following diagram is of the blastopore sage of...Ch. 32 - Prob. 2ACh. 32 - Prob. 3ACh. 32 - Which of the following cell layers is not...Ch. 32 - Prob. 2S
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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_forwardOdontoblasts are derived from a. Ectoderm b. Endoderm c. Histiocytes d. Undifferentiated mesenchymal cellsarrow_forwardThe cells that give rise to gametesa. are derived from the mesoderm.b. often arise independently from the three germ layers.c. originate directly from the tissue that will develop into thegonads.d. are some of the last cells of the embryo to differentiate.e. are formed the same way in all animals.arrow_forward
- Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and ectoderm d.Ectoderm and mesodermarrow_forwardIn a reptile egg, the extraembryonic membrane thatencloses the embryo in a watery environment is thea. allantois.b. amnion.c. chorion.d. yolk sac.arrow_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_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_forwardIf cells from the presumptive neural ectoderm of a frog gastrula are transplanted onto the surface of a second gastrula where skin would normally develop, the transplanted cells will still develop into tissues of the nervous system. This experiment shows that the transplanted cells areA. differentiated.B. totipotent.C. discontinuous.D. determined.E. endodermal.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_forward
- All of the following are true about humans EXCEPT: A. our zygote and early embryo cells have indeterminate cleavage B. Our blastopore becomes our mouth C. We are eumetazoan triploblastic bilateral deuterostomes D. our early embryo cells are sort of radially arranged but with rotational cleavagearrow_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_forwardEndoderm Mesoderm Ectoderm Match the structures below with the correct germ layers listed above that they are formed from. Number: Answer Answer Answer Answer Tissues and Organs: Central Nervous System Lining of the Digestive Tract Skin Skeletonarrow_forward
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