CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 25, Problem 20TYK
Summary Introduction
To determine: Whether a large tropical reptile that has a high and relatively stable body temperature is an endotherm or an ectotherm.
Concept introduction: The animals can be classified as endothermsor ectothermsdepending on their intrinsic ability to maintain a constant body temperature. The endotherms maintain a constant body temperature through heat produced by the
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Define the following terms: ectotherms, endotherms, poikilotherms, homeotherms, eurytopic, and stenotopic. Give an example for each.
Consider 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 endotherm
Research 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.
Chapter 25 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
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- What is the difference between ecotherms and endotherms?arrow_forwardThe cell is the basic unit of all living things. Some organisms like Amoeba and bacteria are only one cell. Viruses are sub-cellular. Plants and animals are multicellular. Analyze how this fact is important when considering how different organism feed, respire, and excrete. Give two examples for each characteristic and use a multi- cellular organism and a uni-cellular (one-celled) organism to compare.arrow_forwardWhat is the trade-off of ectotherms with regard to maintaining an internal environment that doesn’t vary much? Ectotherms are larger than endotherms because they need to have a larger surface area to volume ratio in order to either increase or lower their temperature. Ectotherms usually have fur in order to conserve heat when they live in very cold environments. Ectotherms are smaller than endotherms because they need more surface area to dissipate heat relative to their insides. Ectotherms can survive in a wider variety of habitats because they are smaller and can behaviorally adapt to a wide variety of temperatures.arrow_forward
- 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-bloodedarrow_forwardAn average adult cheetah has a mass of 44,010 grams and a metabolic rate of 61.77 joules per second. Use these data to place the cheetah on the graph. Based on these data, would you characterize the cheetah as an endotherm or ectotherm? How do you know?arrow_forwardWhich of these statements is true about multicellular organisms? (a) each section of an organism is made of a special type of cells that perform one specific function (b) the tissues within an organism each contain a variety of cell types, so that the tissue can form any kind of organ (c) cells are equipped with a variety of organelles so that the cells all work independently of one another (d) the systems within an organism work together to support the organism's overall functionarrow_forward
- Select the answer that is FALSE about homeostasis in living oraganisms. Question 18 options: a) It is NOT normal for different organ systems to work together to achieve homeostasis. b) An example of homeostasis is the regulation of blood glucose levels. c) Homeostasis is the maintenance if a constant internal environment. d) If homeostasis is not maintained within a particular range, the health of the organism deteriorates.arrow_forwardWhat is the difference between ectotherms and endotherms?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_forwardwhich of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.arrow_forwardHow could the increasing global temperature associated with climate change impact ectotherms? a. Ectotherm diversity will decrease in cool regions. b. Ectotherms will be able to be active all day in the tropics. c. Ectotherms will have to expend more energy to cool their body temperatures. d. Ectotherms will be able to expand into new habitats.arrow_forward
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