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EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
Publisher: PEARSON
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Concept explainers
Question
Chapter 27.1, Problem 2CC
Summary Introduction
To explain:
Whether the sponges are less successful or “highly evolved” than other animal groups.
Concept introduction:
Sponges belong to phylum “Porifera”. They are considered as basal animals as they were the first animal to have evolved on earth.
They are the most primitive animals with cellular level of organisation. They lack true tissues, but contain specialized cells for carrying out various activities. They are filter feeders.
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Students have asked these similar questions
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Matching:
(23-27) Match the specialized cell/organ to its function:
23
Colloblast
24.
Choanocyte
25
Spicule
26.
Osculum
27)
Cnidocyte
A. structural support
B. water exits sponge
here
C. stinging cell with poison barb
D. sticky cell to capture food
E. filters food out of water in sponges
Chapter 27 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
Ch. 27.1 - Prob. 1CCCh. 27.1 - Prob. 2CCCh. 27.2 - What is the Cambrian explosion? Why is it...Ch. 27.2 - Prob. 2CCCh. 27.3 - Prob. 1CCCh. 27.3 - WHAT IF? Would it be accurate to describe the...Ch. 27.4 - Prob. 1CCCh. 27.4 - Describe two key adaptations of aquatic...Ch. 27.4 - MAKE CONNECTIONS The radiation of bilaterians in...Ch. 27.5 - Describe two adaptations that have enabled insects...
Ch. 27.5 - MAKE CONNECTIONS Compare and contrast how the...Ch. 27.6 - Describe three key amniote adaptations for life on...Ch. 27.6 - Prob. 2CCCh. 27.6 - WHAT IF? Which came first, the chicken or the egg?...Ch. 27.7 - Describe how ocean communities changed in the...Ch. 27.7 - Prob. 2CCCh. 27.7 - Prob. 3CCCh. 27 - Prob. 1TYUCh. 27 - Fossil steroid and molecular clock evidence...Ch. 27 - Which of the following was probably the least...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - FOCUS ON EVOLUTION In Figure 27.29, circle the...Ch. 27 - FOCUS ON ORGANIZATION Early tetrapods had a...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Collectively, do these...
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- Animal Kingdom, Part I Background: There are ten major phyla that represent the invertebrate animals. Though they all share animal characteristics, each phylum has unique characteristics that allow for identification and classification of those organisms. Scientists do not always rely solely on their memory to help them classify animals, they often rely on reference materials. In this activity, you will create your own reference for the animal kingdom. Instructions: Review the information found in the lessons on invertebrates including The Animal Kingdom, Body Plans, Phylum Placazoa, Phylum Porifera to review the key characteristics that define the phyla that you study. Create a concept map or illustrated drawing for each phylum (Placazoa and Porifera) that will help you classify invertebrate animals into that group.arrow_forwardEvol question: If the common ancestor of Cnidarians were an open-ocean jellyfish, what would you infer regarding the evolutionary trends in the relative importance of the polyp and medusa stages?arrow_forwardThe distinction between sponges and other animal phyla is based mainly on the absence versus the presence of (A) a body cavity. (B) a complete digestive tract. (C) mesoderm. (D) tissues.arrow_forward
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