Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 20.6, Problem 1R
Summary Introduction
To review:
The hypothesis supporting the reason for the presence of no giant insects on the earth at present.
Introduction:
During the prehistoric times, the insects ruled the earth when its atmosphere was rich in oxygen. After the evolution of birds, the size of insects decreased due to certain factors despite the increased levels of oxygen. At present, insects with a small size can be easily seen and no giant insect is found to be living on the earth.
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The pangolin or scaly anteater is a mammal and yet, its body is covered with scales. Explain. Cite at least three (3) references.
scaly anteater is a mammal but it is covered with scales, why? explain in scientific reasons
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Group of answer choices
A. Mollusca, Chondrichthyes
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Chapter 20 Solutions
Life: The Science of Biology
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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
Birds are unique because they have modified forelimbs which serve as wings and a body covered in feathers. However, just having wings and feathers does not mean that an organism can fly (look at the ostrich and penguin!).
Please discuss at least 3 of these additional characteristics/adaptations that are required in order for birds to fly.
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Why do insects exist is an intriguing conundrum. So how did the insect get inside? Please provide some examples.
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Which of the characteristics of living things best explains why some North American birds fly south for the winter
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Most sea anemones are sessile animals . what do biologist mean when they say that a sea anemone moves ?
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The phylum Chordata only contains vertebrate species.
Question 4 options:
True
False
Which of the following is NOT true about reptiles and birds?
Question 16 options:
Reptiles are cold-blooded, whereas birds are warm blooded.
Both reptiles and birds live exclusively on land.
Both reptiles and birds lay eggs.
Both reptiles and birds breath through lungs.
In addition to a spinal column, what key feature distinguishes members of Vertebrata from Chordata?
Question 21 options:
Quadripedal Locomotion
Hardened Endoskeleton
The Notochord
Body Hair
The two main groups of vertebrates include:
Question 19 options:
Non-Bird Reptiles/Birds and Mammals
Mammals and Amphibians
Monotremes and Marsupials
Fish and Tetrapods
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The word invertebrate is so broad that it describes 95 percent of all living animal species. Do you think the term invertebrate is too broad to be useful to scientists? Give reasons to support your answer.
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Cite at least three (3) scientific reasons why pangolin or scaly anteater is a mammal despite its body covered with scales.
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Ectothermic insects have respiration rates that are proportional to the temperature of their surroundings
How do insects in the
a) tropics,
b) cold regions of the world and
c) desert cope with the climatic condition?
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modern organism is most closely related, evolutionarily, to the Megalodon.
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How would the evolution of teeth and bones composed of calcite or aragonite, instead of dahllite, have changed the lifestyles of some vertebrates? Give some specific examples using both fossil and present-day animals.
typed answer only
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Animals that have true tissues, bilateral symmetry, segmented bodies, and are protostomes are known as:
Arthropods
Cnidarians
Sponges
Chordates
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During migratory locomotory functions of insects, the following are suppressed in their body, EXCEPT
Question 5 options:
all metabolic activities
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reproduction
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