2 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781264439218
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 32, Problem 1A
The following diagram is of the blastopore sage of embryonic development. Based on the information in the diagram which of the following statements is correct?
a. Most animals exhibit this pattern of development.
b. It would have formed by spiralian cleavage.
c. It would exhibit determinate development.
d. All of the choices are correct.
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Which of the following is not true about frogs eggs and blastula formation? Choose all possible answers
a. denser yolk in the animal hemisphere.
b. Cleavage is holoblastic
c. first cleavage plane is meridional and bisects the gray crescent, revealing the existence of some factor(s) that determine(s) the initial orientation of the cleavage spindle.
d. first furrow also marks the plane of bilateral symmetry in the body
e. All four blastomeres differ in sizes.
f. All of the following are true about eggs of frogs.
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 cleavage
In organisms such as the chick, in which the egg has extensive yolk, the eggA. shows complete cleavage.B. shows incomplete cleavage.C. forms a blastoderm but no blastocoel.D. shows even distribution of the yolk.E. fails to synthesize DNA during cleavage.
Chapter 32 Solutions
2 SEM ACC W/RAVEN CARDED
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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- If 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_forwardWhich of the following statements is TRUE? A. Animals with indirect development requires external fertilization and an aquatic environment B. Protandry refers to species that begins life as male but later on transforms into females C. Parthenogenesis is a form of sexual reproduction di D. Animals may reproduce either sexually or asexually but never botharrow_forwardWhich of the following is the correct order for the four developmental phases in animals? A. Segmentation of the body B. Determination C. Cell differentiation D. Formation of body axes a. A, B, C, D b. A, D, C, B c. D, A, B, C d. D, A, C, Barrow_forward
- The development of a zygote into a baby involves pre-embryonic development for the first 2 weeks, followed by embryonic development for the next 6 weeks, and finally fetal development until the baby is born. When is the developing baby considered a fetus? Select one: a. When all major organ systems have formed b. After the neural tube forms c. Once gastrulation is complete d. When most major organ systems have formed; the neural system forms during the fetal stagearrow_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_forwardWhich of the following correctly identifies the stages in embryonic development between weeks 2 and 8? Select one: a. Formation of placenta → neurulation → organ formation → gastrulation b. Gastrulation → organ formation → neurulation → formation of placenta c. Gastrulation → neurulation and placental formation → organ formation d. Formation of placenta → gastrulation → organ formation → neurulationarrow_forward
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