INTEGRATED PRINC.OF ZOOLOGY(LL)(FD)
17th Edition
ISBN: 9781260704310
Author: HICKMAN
Publisher: MCGRAW-HILL CUSTOM PUBLISHING
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Textbook Question
Chapter 9, Problem 2RQ
Can you suggest why, during the evolutionary history of animals, there has been a tendency for maximum body size to increase? Do you think it inevitable that complexity should increase along with body size? Why or why not?
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Students have asked these similar questions
Why do penguins, seals, and tuna havesimilar body forms that permit rapid swimming?
all share a common ancestor at some point in the past.
all of their bodies have been compressed since birth by intensive underwater pressures.
flying, pregnancy, and gill-breathing all require similar adaptations in form.
the shape is a convergent evolutionary adaptation that reduces drag while swimming.
this is the only shape that will allow them to maintain a constant body temperature in water.
How is modularity beneficial to animal specialization during the course of evolution? Illustrate your explanation with an example.
How can we understand the evolutionary relationships among animals, and how, in turn,can we understand the biological traits that have given rise to such great diversity on a few branches of the animal tree of life?
Chapter 9 Solutions
INTEGRATED PRINC.OF ZOOLOGY(LL)(FD)
Ch. 9 - Prob. 1RQCh. 9 - Can you suggest why, during the evolutionary...Ch. 9 - Prob. 3RQCh. 9 - Body fluids of eumetazoan animals are separated...Ch. 9 - What are the four major types of tissues in...Ch. 9 - How would you distinguish simple and stratified...Ch. 9 - What three elements occur in all connective...Ch. 9 - What are three muscle tissue types found among...Ch. 9 - Describe the principal structural and functional...Ch. 9 - Match the animal group with its body plan:
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- For this activity, you should familiarize the diverse group of vertebrates and make a phylogenetic tree showing their evolutionary relationships. This tree should be primarily based on physical characteristics, such as: I. Presence or absence of a backbone II. Ability to breathe in air or water III. Cold or warm blooded IV. Carnivore, herbivore, or omnivore V. Presence or absence of hair/fur VI. Any other external structure such as horns TO DO: Lay all the animals on their desks and separate them into two groups using the physical characteristics above☝ The animals are on the picture.arrow_forwardThe name for the monophyletic group of animals that includes all reptiles, mammals, birds, and amphibians is the ----- . This group is characterised by the evolution and shared presence of ----- . However, some members of this group do not possess this feature because of a process called ----- loss. Snakes are famously legless reptiles, but other reptiles have also lost their limbs to varying degrees. Within the family ---- , we see species that have no limbs and some that have only hind limbs. In the genus ---- we can find species that have fully pentadactyl limbs, as well as those with only 3, 2, or 1 --- per foot.arrow_forwardWhich question below directly corresponds to whether Lamarck or Darwin are correct about their theories of the mechanisms of evolution? A.) Why don’t the shorter neck giraffes feed on grasses and lower vegetation? B.) How would the shorter necked giraffes in Lamarck’s theory survive to reproduce and pass on the “need” for longer necks if they were unable to reach food? C.) Why won’t the taller necked giraffes in Darwin’s theory provide assistance to the shorter giraffes since they are the same species? D.) Will the smaller giraffes be more adapted to hide from predators since they wouldn’t be visible from greater distances?arrow_forward
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