CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 25, Problem 23TYK
Summary Introduction
To suggest: An evolutionary hypothesis to explain why mammals and birds living at the higher altitudes are, on average larger and bulkier than related species living at lower latitudes.
Concept introduction: Thermoregulation is a homeostatic mechanism by which organisms maintain a constant body temperature regardless of external fluctuations. The inability to do so can result in death of an organism.
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One of Darwin’s finches, the medium ground finch (Geospiza fortis), is found on the small island of Daphne Major. These finches are seedeating birds. A major drought occurred on the island in 1977. Following the drought, the average beak size of medium ground finches had increased about 3%–4%. Why might a drought lead to an evolutionary change in beak size? Propose a hypothesis and explain how you could go about testing it.
How would you apply this in a Lamarckian explanation?
Tiger Moths (Bertholdia trigona) produce high pitched ultrasonic clicking (at a rate of 4500 clicks/sec) when they hear the echolocation calls of bats (bats eat moths). As a result, the bat's sonar is jammed and the Tiger Moth escapes without being caught, killed, and eaten. Please use your knowledge of Evolution by Natural Selection to explain the process by which this remarkable anti-predator defense evolved in Tiger Moths.
Please use your Knowledge of Evolution by Natural Selection to explain the process by which this remarkable anti-predator defense evolved in Tiger Moths.
Answer the following:
This spectacular animal is a Lesser Bird of Paradise, Paradisea minor, from the highlands of Papua New Guinea. In the context of various evolutionary phenomena, why do you suppose:
(a) This bird is confined to New Guinea and two nearby islands? Why would you not expect to find it in the mountains of Borneo? Explain in detail.
(b) This spectacular tail presumably attracts predators; why hasn't natural selection acted to reduce it or camouflage it? Explain in detail.
Chapter 25 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 25 - Complete this map, which presents the three main...Ch. 25 - In this schematic of urine production in a...Ch. 25 - Prob. 3TYKCh. 25 - In each nephron of the kidney, the glomerulus and...Ch. 25 - As filtrate passes through the loop of Henle, salt...Ch. 25 - Birds and insects excrete uric acid, whereas...Ch. 25 - Prob. 7TYKCh. 25 - Match each of the following components of blood...Ch. 25 - Prob. 9TYKCh. 25 - Prob. 10TYK
Ch. 25 - Prob. 11TYKCh. 25 - Match each of the following components of blood...Ch. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Compare the water and salt regulation in a salmon...Ch. 25 - Prob. 17TYKCh. 25 - Prob. 18TYKCh. 25 - Some diuretics are on a list of substances that...Ch. 25 - Prob. 20TYKCh. 25 - Prob. 21TYKCh. 25 - Prob. 22TYKCh. 25 - Prob. 23TYKCh. 25 - Prob. 24TYKCh. 25 - Scientists have found that the quantity of...
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