Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 33, Problem 7TYU
Evolution connection • Interpret thf data Draw a phylogenetic tree of Bilateria that includes the ten phyla of bilaterians discussed in detail in this chapter. Label eath brauch that leads to a phylum with a C, P, ur A, depending on whether members of thc phylum are coelomates (C), pseudocoelomutes (P), or acoelomatos (A). Use your labeled tree to answer the following questions:
- (a) For each of the threc major clades of bilaterians, what (if anything) can be inferred about whether the common ancestor of the clade had a true coelom?
- (b) To what extent has the presence of a true coelom in animals changed over the course of evolution?
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Answer according to phylogenetic tree for animal phyla
1. Which phyla are radically symmetrical?
2. Which phyla are coelomates?
3. Which phyla are triploblastic? Explain what triplobastic means.
4. Which phyla have segmented bodies and a closed blood system?
5. a) Differentiate between an exoskeleton and endoskeleton.
b) Which phyla have these skeletons?
c) Give one advantage and disadvantage of each of this skeletons
6. Which phylum did not hive rise to any other group of animals?
7. Name one feature of the chordates that make them different from the other phyla
8. What was the common ancestor of all animals?
Which of the following is considered a synapomophy of the Kingdom
Disciristatae? *
It exhibits the tubular cristae
Presence of a spiral or crystalline rod structure inside each of their flagella
some taxa possess the excavate feeding groove
the presence of a kinetosome at the base of a flagellum
Which evolutionary novelty in the origin of eukaryotes paved the way for
endosymbiosis to occur. *
The evolution of digestive vesicles
The formation of endomembrane system
The appearance of a cytoskeleton.
the formation of a nuclear membrane
The phylogenetic tree in Exercise 1 above shows an outdated relationship between Brachiopoda, Bryozoa, and Mollusca. We now know that: (1) Brachiopoda is more closely related to Mollusca; and (2) Bryozoa forms the sister-group to the clade formed by Brachiopoda+Mollusca. In the space below draw a phylogenetic tree showing the correct interrelationships among the 5 clades listed:
Bryozoa:
Brachiopoda:
Linguliformea:
Craniiformea: Rhynchonelliformea:
Please include mollusca. Should be 6 classes total
Chapter 33 Solutions
Campbell Biology (10th Edition)
Ch. 33.1 - Prob. 1CCCh. 33.1 - Prob. 2CCCh. 33.2 - Compare and contrast the polyp and medusa forms of...Ch. 33.2 - Prob. 2CCCh. 33.2 - MAKE CONNECTIONS Many new animal body plans...Ch. 33.3 - Prob. 1CCCh. 33.3 - Prob. 2CCCh. 33.3 - MAKE CONNECTIONS Explain how the molluscan foot...Ch. 33.4 - Prob. 1CCCh. 33.4 - Describe two adaptations that have enabled insects...
Ch. 33.4 - MAKE CONNECTIONS Historically, annelids and...Ch. 33.5 - Prob. 1CCCh. 33.5 - WHAT IF? The insect Drosophila melanogaster and...Ch. 33.5 - MAKE CONNECTIONS Describe how the features and...Ch. 33 - Lacking tissues and organs, how do soonges...Ch. 33 - Describe the cnidarian body plan and its two major...Ch. 33 - is the lophotrochozoan clade united by unique...Ch. 33 - Describe some ecological roles of nematodes and...Ch. 33 - You've read that echinoderms and chordates are...Ch. 33 - A land snail, a clam and an octopus all share...Ch. 33 - Prob. 2TYUCh. 33 - The water vascular system of echinoderms (A)...Ch. 33 - Prob. 4TYUCh. 33 - In Figure 33.2, which two main clades branch from...Ch. 33 - Prob. 6TYUCh. 33 - Evolution connection Interpret thf data Draw a...Ch. 33 - Prob. 8TYUCh. 33 - Prob. 9TYUCh. 33 - SYNTHESIZE YOUR KNOWLEDGE Colleclively, do these...
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