Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 32, Problem 1TYK
Summary Introduction
Introduction: All the animals are eukaryotic multicellular organisms. They are heterotrophs, obtaining energy by consuming energy-releasing food substances. Most of the animals have complex tissue structure with specialized and differentiated tissue.
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Chapter 32 Solutions
Study Guide for Campbell Biology
Ch. 32 - a. What is a larva? b. How does a larva differ...Ch. 32 - Describe the three hypotheses for the rapid...Ch. 32 - Prob. 3IQCh. 32 - Prob. 4IQCh. 32 - Fill in the blanks in the following simplified...Ch. 32 - Prob. 1TYKCh. 32 - The process during which the germ layers are...Ch. 32 - Prob. 3TYKCh. 32 - Prob. 4TYKCh. 32 - Prob. 5TYK
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- The Brachyury and Tbx5 in vertebrates and the Ap3 gene in flowering plants a. are examples of Hox genes. b. are examples of co-opting a gene for a new function. c. are homologues for determining the body plan of eukaryotes. d. help regulate the formation of appendages.arrow_forwardWhich statement is true of hox genes? Group of answer choices A. they regulate development of body regions and are found in all animals B. they control the functioning of cells and are found in all life C. they control growth and development in plants D. they are only found in insects and control segmentationarrow_forwardWhich of the following statements is FALSE? a. Only vertebrates possess HOX genes. b. HOX genes are transcription factors. c. Hox genes are very highly conserved in the genome location and function among organims. d. HOX genes are activated in a very predictable pattern.arrow_forward
- Which of the following is not a feature common to most animals? a. development into a fixed body plan b. asexual reproduction c. specialized tissues d. heterotrophic nutrient sourcingarrow_forwardWhich statement about Hox genes is false? a. They are expressed in similar patterns in the embryos of both mice and flies. b. They include a conserved region of base pairs called the homeobox. c. They are arranged in similar clusters of genes in both mice and flies. d. They are part of the so-called genetic toolkit. e. Because of their important functional roles, they evolved rapidly in both mammals and flies.arrow_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
- Insects, birds, and bats can fly. Which of the following is a derived characteristic unique to birds and bats? A. light body weight B. modified limbs for flight C. high metabolic rate D. large surface of wingarrow_forwardThe group of mammals that still lays eggs is referred to as a. Marsupials b. All lay eggs c. Placental Mammals d. Monotremesarrow_forwardWhich of the following is an INCORRECT statement? Question 6 options: a) The early embryo of a higher animal is never like a lower animal, but only like its early embryo. b) During the first three stages of development, blastomeres become smaller by way of each embryonic cleavage. c) The space inside of the neural tube will eventually become the space inside of the digestive system. d) A zygote results from the union of sperm and egg.arrow_forward
- Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution? A. The similarities suggest that chickens and humans are the direct descendants of modern day fish with tails and gill slits. B. The similarities suggest that vertebrates passthrough each of the adult stages of their evoluntionary history as they develop. C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slitsarrow_forwardA. Water currents in the ocean are much stronger than any sperm. How do sperm and egg find each other? B. In humans there are no water currents and the volume of the female reproductive tract is relatively limited. Then, why does the male have so many sperm? C. Why do sea urchins have external fertilization? D. Then why don't the parents take care of the young? E. Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?arrow_forwardPremature babies born before the 26th week of gestation develop physiological problems because Select one: a. gastrulation did not complete b. amniotic fluid is required for breathing c. cell specialization has not begun d. organs are underdevelopedarrow_forward
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