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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Textbook Question
Chapter 32, Problem 10TYU
Test Your Understanding
10. EVOLUTION LINK Most biologists consider birds as living dinosaurs. Justify this position.
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Morphological data can sometimes be misleading in terms of evolutionary relationships. Question: Why can morphological data be misleading? Think about convergent evolution/ environment and the whale, dolphin, hippo relationship)
O E. fossils
3. Which of these sentences states an
opinion?
O F. Paleontologists have
exciting jobs.
O G. Fernando Novas is a
paleontologist.
O H. Novas found a long, sharp-c
4. You can guess that Megaraptor was
most likely a
O I. gentle dinosaur
O J. type of bird
O K. plant-eater
O L. meat-eater
Now solve this riddle! Each numb
Write the letter of the correct answe
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What kind of
Building Comprehension: Reading Passages With High-Interest Practice Activities © Karen Kellah
B
Paleontology - The Fossil
Record
Scientists use the age of
fossils as evidence for evolution.
There are two ways of dating
fossils: Relative dating and
absolute dating. Relative dating
3
uses a fossil's location in rock
2
layers to determine that fossil's
approximate age. Fossils found
deeper in the ground are usually
the
oldest. Using the chart to the right,
a paleontologist can therefore know
that a fossil found in layer 1 at the dig site is older than a fossil found at layer 6, for example, by relative
dating.
Absolute dating determines the fossil's actual age by measuring the amount of an element called
carbon 14 in the fossil. There is a mathematical formula that will calculate the rate of decay of this element.
By measuring the carbon-14 levels and plugging it into the math formula, the scientist can know an actual
number of years old a fossil is.
1. What are the two ways of finding the age of a fossil?.
2. Describe how relative dating works.
3. What does absolute dating do?
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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- Test 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_forwardTest Your Understanding 6.Which of the following is not characteristic of birds? (a) hollow bones (b) amnion (c) ectothermy (d) high metabolic rate (e) reptilian-like scales on legsarrow_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
- INTERPRET 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 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_forwardTest 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_forward
- Which situation is most likely an example of convergent evolution? Squid and humans have eyes similar in structure Worms and snakes both move without legs Some bats and birds have wings that allow them to fly all of the abovearrow_forwardIn 1798, a stuffed platypus specimen was delivered to the British Museum. Reports that it laid eggs created much confusion. To modem biologists, a platypus is clearly a mammal. It has fur and the females produce milk. Young animals have typical mammalian teeth that are replaced by hardened pads of the bill as the animal matures. Why do you think modem biologists can more easily accept that a mammal can have some reptilelike traits than scientists who were considering this animal in the late 1700s?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
- Scientists collectively call humans and their immediate ancestors (a) mammals (b) primates (c) anthropoids (d) hominoids (e) homininsarrow_forwardSaved to Drive at Tools Extensions Help Normal text F3 ▼ Y Arial 1 Y 12 2 F4 + I BIUA F5 3 4 1. What is the genetic link between Amphioxus and humans? 2. What is the significance that all species described in these films (Amphioxus, sharks and humans) belong to the same Phylum? 3. What is the significance that sharks have the same three brain regions as humans? What is the explanation for that? MacBook Air F6 5 8 E E = E F7 6 DII FOarrow_forwardPOSSIBLE POINTS 20 The wings of butterflies and birds are! !structures because, although they are used for the same purpose (fight) they have very different structural compositions. Bird wings are made of bones and feathers while butterfly wings are made from chitin and are part of the insect's exoskeleton. : homologous : analogous : vestigialarrow_forward
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From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license