Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 32, Problem 12TYU
Summary Introduction
To classify: A newly discovered animal and explain its position in the cladogram.
Concept introduction: Deuterostomes are animals whose first opening, the blastopore formed during embryonic development differentiates into the anus. In cladogram, closely related species are often placed close together. The cladogram is the representative diagram of lineages showing nodes and the common ancestors.
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Segmentation
Can be fused into specialized functional regions
Is seen in insects, worms, and their relatives
Is important in the evolution of increasing organismal disparity
Is seen in the Cnidaria (jellyfish and friends)
Is seen in vertebrates (animals with backbones, like you)
Can someone pleae help with 3 question for my biology homework thank you
1)List two traits that animals share with other organisms, and three traits that are unique to animals.
2)Explain the difference between protostome development and deuterostome development. Use full sentences.
3)As discussed in class, animals are classified into different phyla based on the presence of tissues. Define the two options for animals with true tissues, and give a specific animal phylum as an example of each option.
Morphology - Comparative Anatomy
More evidence for evolution is offered by comparing the anatomy, or body parts, of different
organisms. Many animals have body parts that are similar in both structure and function called homologous
structures. The forelimbs of animals like humans, whales, birds, and other creatures are strikingly similar even
though the forelimbs are used for different purposes such as lifting objects, swimming, or flying. The different
changes in the forelimbs are adaptations to the needs of the organisms.
Darwin also observed that animals have structures that they do not use, which are called vestigial organs.
These are structures that an organism has that do not have a function, though they may have had one in the
past. In humans they include the
appendix, the fused tail vertebrae, and
Humerus
wisdom teeth. Perhaps an environmental
change made the organ unnecessary for
survival, and the organ gradually becomes
Radius
Ulna
Carpals
nonfunctional. For instance, the…
Chapter 32 Solutions
Biology (MindTap Course List)
Ch. 32.1 - Prob. 1LOCh. 32.1 - Prob. 1CCh. 32.2 - Identify three shared derived characters of...Ch. 32.2 - Prob. 1CCh. 32.2 - Prob. 2CCh. 32.3 - Describe characteristics of chordates, including...Ch. 32.3 - What are four shared derived characters of...Ch. 32.3 - Prob. 2CCh. 32.3 - Prob. 3CCh. 32.4 - Prob. 4LO
Ch. 32.4 - Prob. 1CCh. 32.4 - If you found a small fishlike animal along the...Ch. 32.5 - Prob. 5LOCh. 32.5 - Prob. 6LOCh. 32.5 - Prob. 1CCh. 32.5 - Prob. 2CCh. 32.6 - Prob. 7LOCh. 32.6 - Prob. 1CCh. 32.7 - Prob. 8LOCh. 32.7 - Prob. 1CCh. 32.7 - Prob. 2CCh. 32.8 - Describe three vertebrate adaptations to...Ch. 32.8 - Prob. 10LOCh. 32.8 - Prob. 11LOCh. 32.8 - Prob. 1CCh. 32.8 - Prob. 2CCh. 32.8 - Prob. 3CCh. 32.8 - Prob. 4CCh. 32 - Test Your Understanding 1.Which of the following...Ch. 32 - Test Your Understanding 2.Which of the following...Ch. 32 - Test Your Understanding 3.A shark is characterized...Ch. 32 - Test Your Understanding 4.Which of the following...Ch. 32 - Test Your Understanding 5.Reptiles (a) are all...Ch. 32 - Test Your Understanding 6.Which of the following...Ch. 32 - Test Your Understanding 7.Which of the following...Ch. 32 - Test Your Understanding 8.VISUALIZE Draw a simple...Ch. 32 - Test Your Understanding 9.EVOLUTION LINK Sea...Ch. 32 - Test Your Understanding 10.EVOLUTION LINK Most...Ch. 32 - Test Your Understanding 11.EVOLUTION LINK Discuss...Ch. 32 - Prob. 12TYUCh. 32 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Test Your Understanding 8.VISUALIZE Draw a simple cladogram illustrating the evolutionary relationships among extant mammals (marsupials, eutherians, and monotremes). Include the following characters in your cladogram: well-developed placenta, vivipary, endothermy, marsupium, hair.arrow_forwardINTERPRET DATA Imagine that you discover a new animal in a rain forest. It has an elongated, segmented body with bristles, and it has no obvious head. Where would youplace this animal in the accompanying cladogram? Support your decision. Look at the more detailed cladogram inFigure 30-6a (in Chapter 30). What additional characteristicswould help you place your animal in this cladogram? Explainyour decision-making process.arrow_forwardTest Your Understanding 7.Which of the following is true of mammals? (a) they evolved from saurischian dinosaurs (b) they are exotherms (c) they have hair and three middle ear bones (d) mammalian embryos do not have an amnion (e) they all bear their young alive (do not lay eggs).arrow_forward
- Test Your Understanding 2.Which of the following is/are found in tunicates? (a) dorsal, tubular nerve cord (b) tube feet (c) anal gill slits (d) two pairs of appendages (e) vertebral columnarrow_forwardTest Your Understanding 12 VISUALIZE Label the diagram.arrow_forwardTest Your Understanding 4.Which of the following characteristics is/are associated with amphibians? (a) amnion (b) placoid scales (c) heart with two complete ventricles (d) swim bladder (e) metamorphosisarrow_forward
- Test Your Understanding Apply and Analyze 9. In interpreting a cladogram, (a) we can identify the specific ancestor of each taxon by tracing each branch back to the node closest to the root (b) taxa on the right side of a cladogram have evolved from the taxa on the left side (c) the relative placement of smaller branches allows us to determine the number of years since a particular taxon has evolved (d) we can determine relationships by tracing along the branches back to the most recent common ancestor (e) we must first identify horizontal gene transferarrow_forwardTest Your Understanding 10.EVOLUTION LINK Most biologists consider birds as living dinosaurs. Justify this position.arrow_forwardTest Your Understanding 3.A shark is characterized by (a) amnion (b) bony skeleton (c) water vascular system (d) placoid scales (e) endothermy and amnionarrow_forward
- Test Your Understanding 9.EVOLUTION LINK Sea urchins have radial symmetry. Explain why they are not classified as cnidarians.arrow_forwardThese are embryos at their most advanced stage, shortly before birth. Fish Salamander Tortoise Chick Rabbit Human Describe how the embryos changed for each of these organisms from their earliest to latest stages. Species Anatomical Changes From Early to Late Stages Human Chicken Rabbit Tortoise Salamander Fish 1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physical similarities exist between each of the embryos?arrow_forwardThe study of animals shape and -3 ...structure in a science calledarrow_forward
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