Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 35, Problem 3CQ
Summary Introduction
To determine: Whether birds are considered to be living dinosaurs.
Introduction: The birds were evolved from reptiles, and this has been proved by the discovery of the fossils of various flying dinosaurs like Archaeopteryx, and the molecular studies done on the genetic material predicting similarities and differences in genetic pattern. Although birds have developed from reptiles, some differences separate these groups from each other.
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Developmental Biology - Embryology
Many scientists use what an organism looks like as an
embryo, or embryology, as evidence for evolution. The
embryos of most vertebrates look very similar and have similar structures. For example, fish, bird, rabbit, and human embryos are similar in appearance in early stages. They all have gill slits and a tail with muscles to move it. Later as the embryos develop, they become less and less similar.
What does the study of embryology show when comparing most vertebrates?
A principle of biology is that all species (past and present) arerelated by an evolutionary history. Are birds living dinosaurs?
n.
Scientists have found one new fossil that is similar to Archaeopteryx. It is only the second fossil of its kind. It shows an animal that had a long-feathered tail and small teeth, like non-avian dinosaurs. But the animal also had flight feathers and wings, like modern birds. The fossil also shows a fused clavicle bone, which confirms the relationship between birds and dinosaurs because they are the only two groups with this characteristic.
What is true about this scenario?
It shows evidence of evolution.
It shows evidence of widespread expression.
It shows evidence of climate change.
It shows evidence of causation.
Chapter 35 Solutions
Biology
Ch. 35.1 - Prob. 1CCCh. 35.3 - Core Skill: Connections Are fish a monophyletic...Ch. 35.3 - What features distinguish ray- finned fishes from...Ch. 35.3 - Prob. 2CCCh. 35.4 - What was the purpose of the study conducted by...Ch. 35.4 - Prob. 2EQCh. 35.4 - CoreSKILL Summarize the results of the...Ch. 35.4 - What were the advantages to animals of moving onto...Ch. 35.4 - Prob. 2CCCh. 35.5 - Prob. 1CC
Ch. 35.5 - Core Skill: Modeling The goal of this modeling...Ch. 35.5 - Prob. 2CCCh. 35.5 - Core Skill: Connections Look ahead to Figure...Ch. 35.5 - Prob. 3CCCh. 35.6 - Prob. 1CSCh. 35 - Which of the following is not a defining...Ch. 35 - Prob. 2TYCh. 35 - Prob. 3TYCh. 35 - Prob. 4TYCh. 35 - Prob. 5TYCh. 35 - Which clade does not include frogs? a. vertebrates...Ch. 35 - Prob. 7TYCh. 35 - Prob. 8TYCh. 35 - Prob. 9TYCh. 35 - Which of the following is not a distinguishing...Ch. 35 - Prob. 1CQCh. 35 - Prob. 2CQCh. 35 - Prob. 3CQCh. 35 - By what means can vertebrates move?Ch. 35 - Prob. 2COQ
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- Which is the only wrong statement? Group of answer choices small mammals and non-avian dinosaurs co-existed some non-avian dinosaurs invented flight non-avian dinosaurs were a very short-lived group birds and large, slow-moving dinosaurs co-existed birds are currently living avian dinosaursarrow_forwardBirds are often referred to as “living dinosaurs.” Is this accurate? Why or why not?arrow_forwardPick two organisms from the cladogram below and make a claim about the evolutionary relationship between these organisms. Support your claim using evidence from the lesson and scientific reasoning about evolutionary relationships. Ray-finned fish Rodents Sharks Amphibians Primates & rabbits Crocodiles Birds Hair Eggs with shell Amniotic egg Four limbs Bony skeleton Vertebrae Image Source a relationship betwwen a shark and bird is a bony skeleton amitotic egg and four limbsarrow_forward
- Discuss: How old are the oldest camel fossils shown? How has the skull changed over time? How have the teeth changed over time? How have the leg bones changed over time? Table 15.1 Fossils are used by scientists to understand how camels evolved. Table 15.1 Camel Evolution Age Paleocene 65 million years ago Eocene 54 million years ago Organism Skull and teeth Limb bones Oligocene 33 million years ago Miocene 23 million years ago Presentarrow_forwardMorphology - 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…arrow_forwardSome people state that the dinosaurs have not “gone extinct,” they are with us today. What evidence can be used to support this statement?arrow_forward
- A number of scientists believe that the Permian extinction was caused by huge volcanic lava flows (from the Siberian traps) that may have caused low oxygen concentrations compared to the high oxygen levels in the Permian. Does this low oxygen level after the Permian extinction make it likely that dinosaurs, especially large ones, did not evolve immediately after the Permian extinction (252 million years ago)? Why or why not?arrow_forwardWhat is the DNA analysis and fossil records of the animal aye-ayearrow_forwardwhy does pattern of organization of animals portray evolutionary trnds but do not depict evolutionary sequence?arrow_forward
- Which statement is true? Fossils can provide information about when life forms existed. Fossils cannot provide information about life cycles and behaviors. Fossils cannot provide information about relatedness of life forms. Fossils can provide information about the entire evolutionary process of life forms.arrow_forwardcrocs and relatives homed dome- heads duckbills souropods prosauropods other theropods ornithischians dinosaurs theropods saurischians ornithodirans (archosaurs related to birds) archosaurs (ruling reptiles) Birds are dinosaurs. However, an old, traditional grouping does not include birds in dinosaurs. According to the traditional classification, the would then be considered 0000 Not phyletic Monophyletic Polyphyletic Paraphyletic group dinosaursarrow_forwardWhat is /are the most recent ancestor/s of the following: Modern Fishes Earliest amphibian (What group of fishes gave rise to earliest amphibians?) Earliest reptiles Earliest birds Earliest mammals Describe the morphological features of their ancestor/s briefly.arrow_forward
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