BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 33, Problem 3CQ
Summary Introduction
To determine: The brachiopods, bryozoans, mollusks and annelids belong to monophyletic, paraphyletic or polyphyletic groups.
Introduction.
A monophyletic group contains a common ancestor and all of its descendants. A paraphyletic group contains a common ancestor but not all of its descendants. A polyphyletic group contains groups of species with different common ancestors.
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Students have asked these similar questions
organisms from any of the major phyla listed below. You are required to select your organisms from four different phyla. You cannot use the same phylum twice. Give the taxonomic structure for each organism you chose Describe the environment where it is found the organism endangered , protected or otherwise in danger of extinction Provide one way your organism can be protected from extinction Phyla Porifera Cnidaria Platyhelminthe Mollusca Annelida Echinoderms Rotifera chordata nematoda
. In the space below draw a phylogenetic tree showing the inter-relationships among the following clades: Protostomia, Arthropoda, Mollusca, Cnidaria, Echinodermata, Crinoidea, Blastoidea, Asteroidea, Ophiuroidea, and Echinoidea.
L
Gymnospermae
100
200
100 200 300
Amphibia
0 50 100 150 200
0 25 50 75 100
Aranea
Diptera
50
100
150
50 100 150 200 250
50 100 150 200 250
050 100 150 200
Clade age (my)
Clade age (my)
Clade age (my)
Clade age (my)
Figure 3. The relationship between species richness and clade age in twelve groups.
Question 8. Suppose species in old clades were more likely to go extinct. How would
this change the relationship between clade age and species richness?
Log (richness)
Log (richness)
Log (richness)
Angiospermae
0
100
Actinopterygii
●
•
0100 200
0
200
●
●
T
300
400
Squamata
0
2.
0
6
0
0
0
300
4
2
0
2
0
4
2-
0
Pteridophyta
200
0
100
Mammalia
● 000 00
0
25
Coleoptera
0
300
50 75
2
2
0
Aves
Chondricthyes
Chapter 33 Solutions
BIOLOGY
Ch. 33.2 - Core Skill: Connections Look back to Figure 25.8....Ch. 33.2 - Prob. 2CSCh. 33.3 - Prob. 1CSCh. 33.3 - Prob. 1EQCh. 33.3 - Prob. 2EQCh. 33.3 - Prob. 3EQCh. 33 - Prob. 1TYCh. 33 - Prob. 2TYCh. 33 - Prob. 3TYCh. 33 - In triploblastic animals, the inner lining of the...
Ch. 33 - Prob. 5TYCh. 33 - Prob. 6TYCh. 33 - Prob. 7TYCh. 33 - Naturally occurring identical twins are possible...Ch. 33 - Prob. 9TYCh. 33 - A major finding of recent molecular studies is...Ch. 33 - Fierce debate centers on whether ctenophores or...Ch. 33 - Why was the evolution of a coelom important?Ch. 33 - Prob. 3CQCh. 33 - Discuss the many ways that animals can affect...Ch. 33 - Prob. 2COQ
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