Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 30, Problem 15RQ
Summary Introduction
To define: Poikilothermy, ectothermy, homeothermy, and endothermy and comment on the limitations of each indicating the thermal relationship of animals.
Introduction: In animals, heat is generated during the metabolic process. The metabolic process includes basal cellular
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Which of the following statements best summarizes the difference between ectothermic and endothermic organisms?
Group of answer choices
Ectotherms absorb external heat, but endotherms use metabolic heat to maintain a warm, steady body temperature
Ectotherms are warm-blooded, but endotherms are cold-blooded
Endotherms control their temperature, but ectotherms have no control over their temperature
Endotherms are warm-blooded, but ectotherms are cold-blooded
From the list of strategies for dealing with harsh cold environments, choose those that an ectotherm would employ:
-Supercooling
-Freeze tolerance
-Dormant eggs
-Hibernation
-Torpor
Choose all that apply. Thank you
From the list of strategies for dealing with harsh cold environments, choose those that an ectotherm would employ. See image attatched.
Chapter 30 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 30 - Define homeostasis. What evolutionary advantages...Ch. 30 - Describe the physiological challenges confronting...Ch. 30 - Distinguish the terms in the following pairs:...Ch. 30 - Young downstream salmon migrants moving from their...Ch. 30 - Most marine invertebrates are osmotic conformers....Ch. 30 - Prob. 6RQCh. 30 - In what animals would you expect to find a salt...Ch. 30 - Prob. 8RQCh. 30 - Prob. 9RQCh. 30 - Prob. 10RQ
Ch. 30 - In what ways does the nephridium of an earthworm...Ch. 30 - Prob. 12RQCh. 30 - Explain how the cycling of sodium chloride between...Ch. 30 - Explain bow antidiuretic hormone (vasopressin)...Ch. 30 - Prob. 15RQCh. 30 - Large mammals live successfully in deserts and in...Ch. 30 - Prob. 17RQCh. 30 - Prob. 1FFT
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- In terms of body temperature regulation, contrast “cold-blooded” (Ectothermic or poikilothermic) and “warm-blooded” (Endothermic or homeothermic). Identify three animals that are ectothermic and three animals that are endothermic. What is the adaptive advantage of endothermy?arrow_forwardConsider an ectotherm and an endotherm of equal body mass. Which of the following would you expect to be true? -both animals require the same amount of energy per unit mass -the ectotherm requires more daily calories from food than the endotherm -the endotherm requires less energy per unit mass but more total energy than the ectotherm -the ectotherm requires less energy per unit mass but more total energy than the endotherm -the ectotherm could survive a longer period without food relative to the endothermarrow_forward1) It is _____for aquatic vertebrates to maintain a body temperature different from their surroundings because ______. A) easier; water is a much better insulator than air due to its greater density B) easier; it is possible for fish to absorb heat from the surrounding water by countercurrent exchange even when the water is colder than the fish C) harder; water is a better conductor of heat than air D) harder; terestrial vertebrates can use countercurrent exchange to absorb heat from air that is cooler than their bodies 2) Compared to terrestrial environments, marine environments have_____." A) greater differences in temperature between hot and cold seasons B) smaller differences in temperature between hot and cold seasons C) the same amount of seasonal variability in temperaturearrow_forward
- Endothermic animals can maintain consistent temperature conditions by generating, main- taining, and regulating their body heat. Under cold conditions, more body heat becomes lost to the environment. Endothermic ani- mals rely on different mechanisms that allow them to maintain their body heat. Which of the following mechanisms that occur in endothermic animals does not describe a mechanism by which they maintain their body heat under these types of conditions? A B с D Some endothermic animals hibernate during extreme environmental conditions, which decreases the rate of metabolic reaction and decreases heat loss. The tissues of the blood vessels of many endothermic animals can dilate and move closer to the skin, allowing for heat to move more readily into the environment. Shivering, which can occur involuntarily in most endothermic animals, produces rapid muscle contractions, which increase the rate of cellular respiration and thereby increase heat production. Layers of densely packed…arrow_forwardEndothermy and Ectothermy are two strategies that organisms use to generate or maintain their internal body temperature. An ectotherm is an organism that derives very little of its body temperature internally, and relies on the environment for heat. An endotherm is an organism that maintains its own body at a metabolically favorable temperature by internal means. Question: How does temperature affect endotherms and ectotherms differently? Describe the evidence that will help you make a claim about the question: How does temperature affect endotherms and ectotherms differently?arrow_forwardConsider the following energy demands: basal metabolism, reproduction, thermoregulation, activity, and growth; How should the energy spent toward these demands differ between an endotherm and an ectotherm of the same size?arrow_forward
- how do ectotherms adjust body temperature. what are some costs and benefits of ecothermey.arrow_forward1. What is the purpose of a "Thermal Homeostasis of Gold Fish" lab? 2. Are fish warm-blooded or cold-blooded animals? 3. How do external temperatures affect cold-blooded animals?4. How do external temperatures affect warm-blooded animals? 5. What do you think will happen if you increase/decrease the temperature of a goldfish’s water? 6. What is the hypothesis on the effects of external effects on temperature homeostasis of a goldfish?arrow_forwardPredict what would happen to the metabolic rate of the mouse if you increased the temperature. Predict what would happen to the metabolic rate of the mouse if you decreased the temperature (You can make this prediction with text or with lines on your graph). Support your prediction with evidence about endotherms and ectotherms. (Hint: Think about what happens to your body when you get hot or cold.)arrow_forward
- Distinguish between ectothermy and endothermy. Give one advantage and one disadvantage for each form of thermoregulation.arrow_forwardlight stimulus Refer to the figure below to answer the question that follows: 40 Bobcat (endotherm) H Enake (netother) 10 10 40 20 30 Ambient temperature (°C) 51. The diagram above shows the body temperature vs ambient temperature for a bobcat and snake. The Despite this extra energy animal that is expending more energy at lower temperatures is the expenditure, the payoff is that a. snake; it can be active during a wide range of temperatures b. bobcat; it can conserve energy c. snake; it can conserve energy d. bobcat; it can be active during a wide range of temperatures snake; it can hide for longer in Mr. vonk's physics room e. Body temperature (°C) 20arrow_forwardResearch the behaviours of a specific ectothermic animal. How do specific behaviours allow for the animal to control its body temperature in cool and hot conditions? How do specific parts of the animal’s anatomy help with thermoregulation? Use a feedback diagram to show how this animal uses thermoregulation in one of these conditions: ectotherm in cool conditions ectotherm in hot conditions Be sure to use ⊕ and ⊝ symbols in the feedback diagram to add important details.arrow_forward
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