Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 47, Problem 3IQ
Summary Introduction
To label: The structures developed in sea urchin and frogs during the process of gastrulation.
Introduction: During gastrulation or the formation of the gastrula, the cells arrange themselves into three distinct germ layers, namely the ectoderm (outermost layer), the mesoderm (middle layer), and the endoderm (innermost layer). This process involves several processes such as cell division, loss of cell-to-cell contact, cell recognition, adhesion, and other such processes. The outcome of this, the gastrula, has all the three germ layers.
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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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- Identify the significance of gastrulation in the developmental process and compare gastrulation in the echinoderm (or in amphioxus), the amphibian, and the bird.arrow_forwardDefine and describe the main features of the following developmental stages: fertilization, cleavage, gastrulation.arrow_forwardFigure 29.22 Which of the following statements about the parts of an amniotic egg are false? The allantois stores nitrogenous waste and facilitates respiration. The chorion facilitates gas exchange. The yolk provides food for the growing embryo. The amniotic cavity is filled with albumen.arrow_forward
- Describe 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_forwardWhich of the following statements is false? a. Cadherins, but not integrins play a role in gastrulation. b. Gastrulation creates the primary germ layers c. Gastrulation requires cells to change their gene expression. d. Body axes are stabilized (made permanent) during gastrulation.arrow_forwardList and describe the phases of embryonic development; from a zygote through gastrulation. What happens after gastrulation?arrow_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_forwardMake a flowchart to show early embryonic development in humans. Start with the zygotearrow_forwardIn gastrulation explain reorganition of the embryonic cells, formation of germinal layers and name types of gastrulation.arrow_forward
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