Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 53, Problem 3U
Gastrulation is a critical event during development. Why?
a. Gastrulation converts a hollow ball of cells into a bilaterally symmetrical structure.
b. Gastrulation causes the formation of a primitive digestive tract.
c. Gastrulation causes the blastula to develop a dorsal–ventral axis.
d. All of these are significant events that occur during gastrulation.
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Using sea star embryos as an example, describe gastrulation. Explain how the mass of inert yolk affects gastrulation in frog and bird embryos
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Which of the following statements about gastrulation is correct?
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Chapter 53 Solutions
Biology
Ch. 53 - Prob. 1UCh. 53 - Which of the following plays the greatest role in...Ch. 53 - Gastrulation is a critical event during...Ch. 53 - Gastrulation in a mammal would be most similar to...Ch. 53 - Of the following processes, which occurs last? a....Ch. 53 - Which of the following would qualify as a...Ch. 53 - Prob. 1ACh. 53 - In the Spemann experiment, when the dorsal lip is...Ch. 53 - Suppose that a burst of electromagnetic radiation...Ch. 53 - Prob. 4A
Ch. 53 - Drug or alcohol exposure during which of the...Ch. 53 - Axis formation in amniotic embryos could be...Ch. 53 - Prob. 1SCh. 53 - You look up from your studying to see your dog,...Ch. 53 - Why doesnt a woman menstruate while she is...Ch. 53 - Spemann and Mangold were able to demonstrate that...
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- At which embryonic event would one be able to first distinguish whether an embryo is diploblastic or triploblastic? A)cleavage B)metamorphosis C)fertilization D)gastrulation E)organogenesisarrow_forwardDescribe the gastrulation by using embryos of the sea star as an example.And describe the way in which the mass of inert yolk influences the gastrulation in bird and frog embryos.arrow_forwardEndoderm, Mesoderm, and Ectoderm are formed during ________. a. Gametogenesis b. Cleavage c. Gastrulation d. Organogenesisarrow_forward
- Which statement relating to frog gastrulation is INCORRECT? a. A second set of bottle cells migrates inward to create the ventral blastopore lip. b. Gastrulation begins in the gray crescent where bottle cells invaginate. c. Cells just below the DBL begin to invaginate. d. The yolk plug is not internalized and will become part of the ectoderm.arrow_forwardDuring embryonic development, unique cell layers develop into specific groups of tissues or organs during a stage called ________. a. the blastula stage b. the germ layer stage c. the gastrula stage d. the organogenesis stagearrow_forwardA mammalian embryo puts the trophoblast into a hurried frenzy before it decides to proceed to the business of gastrulation. Is it a Clever move, or an evolutionary blunder? Explain wellarrow_forward
- The ribs form from the ________. a. notochord b. neural plate c. neural tube d. somitesarrow_forwardIn your own words: Expound how the mass of inert yolk influences gastrulation in amphibians, reptiles, and mammals.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
- Explain: Is the degenerating blastocoel visible in the frog gastrula? How much yolk protrudes through the blastopore of a frog gastrula How much yolk protrudes through the blastopore of a frog gastrula? Chickens lack a larval stage. How do they compensate for this?arrow_forwardThe process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesisarrow_forwardInvestigate how the mass of the inert yolk affects reptiles, mammals and amphibians gastrulationarrow_forward
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