Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 32.2, Problem 2CC
VISUAL SKILLS Ø Explain what is represented by the red colored portion of the branch leading to animals. (See Figure26.5, "Visualizing Phylogenetic Relationships," to review phylogenetic tree diagrams.)
| Common ancestorof |
| Sponges |
| AI other animals |
Most recent common ancestor of animals (770 mya)
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INSTRUCTION:
- Answer the question properly
- Discuss your answer
- Do not copy in Google or here in Bartleby. Construct your own answer.
Figure 1: The phylogenetic tree of the Mysticeti.
QUESTION:
1. List tree synapomorphies shared by extant filter-feeding whales.
Use the following phylogenetic tree to help determine if the provided examples below are
homologous structures or analogous structures.
Figure 27.10
ANCESTRAL
PROTIST
Metazoa
770 million
years ago
©2014 Pearson Education, Inc
Eumetazoa
680
million.
years ago
670 million
years ago
Bilateria
Deuterostomia
Lophotrochozoa Ecdysozoa
The worm shape of a hemicordata and the worm shape of a
nematoda
Porifera
Ctenophora
Cnidaria
The scales of a fish (chordata) and the scales of a scaleworm
(annelida)
The shell of the brachiopoda and the shell of the mollusca
The shell of a mollusca and the hard outer surface of the
arthropods
Hemichordata
Echinodermata
The holes in human skin (pores) and the hole in the body of a
porifera
Chordata
Platyhelminthes
Rotifera
Ectoprocta
Brachiopoda
EXAMPLE
The round shape of an Echinodermata and the round shape of a
ctenophora
Mollusca
Annelida
Nematoda
Arthropoda
The trochophore larval stage of a Mollusca and the trochophore
larval stage of an annelida.
Homologous…
Tree Thinking Review
Draw a bracketed phylogenetic tree of the following groups on the next blank page:
• Peat Moss
• Capybara
•
Ostrich Fern
• Blobfish
• White Pine Tree
• Protists
• Escheria coli
•
Mexico Whiptail Lizard
•
Sunflower Sea Star
• Bold Jumping Spider
• T. Rex
•
Flatworm
• Apple Tree
•
Archaea
• Chanterelle Mushroom
Grasshopper Sparrow
After you draw your tree, label where the following traits would have evolved. Consider
that traits may have evolved more than one time.
• Chloroplasts
• Seeds
• Endosperm
• Flowers
• Vascular Tissue
• Mitochondria
Segmentation
• Central Nervous System
• Notochord
• Vertebrae
• Nucleus
• Membrane Bound Organelles
• Peptidoglycans
• Cranium
Fur
• Lactation
• Feathers
Jaws
• Hollow Dorsal Nerve Cord
Chapter 32 Solutions
Campbell Biology
Ch. 32.1 - Summarize the main stages of animal development....Ch. 32.1 - WHAT IF? What animal characteristics would be...Ch. 32.2 - Put the following milestones in animal evolution...Ch. 32.2 - VISUAL SKILLS Explain what is represented by the...Ch. 32.2 - MAKE CONNECTIONS Evaluate whether the origin of...Ch. 32.3 - Compare three aspects of the early development of...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - Prob. 1CCCh. 32.4 - WHAT IF? Suppose ctenophores are basal metazoans...
Ch. 32.4 - Prob. 3CCCh. 32 - Prob. 32.1CRCh. 32 - What caused ihe Cambrian exploston? Describe...Ch. 32 - Describe how body plans provide useful Information...Ch. 32 - Prob. 32.4CRCh. 32 - Prob. 1TYUCh. 32 - The distinction between sponges and other animal...Ch. 32 - Prob. 3TYUCh. 32 - Prob. 4TYUCh. 32 - EVOLUTION CONNECTION A professor begins a lecture...Ch. 32 - WRITE ABOUT A THEME: INTERACTIONS Animal life...Ch. 32 - SYNTHESIZE YOUR KNOWLEDGE This organism is an...
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