eals and whales have flippers and flukes that have no blubber and are very poorly insulated. How is it possible to avoid excessive heat loss from the flippers when heat needs to be conserved
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Seals and whales have flippers and flukes that have no blubber and are very poorly insulated. How is it possible to avoid excessive heat loss from the flippers when heat needs to be conserved?
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- Explain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.1) 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 temperatureEndothermic 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…
- How does sea otters stay warm differ from the way in which seals stay warm? Explain the mechanism for both.for aquatic animals such as sharks, how do the animals maintain their body temperature when they are in warmer or colder waters? do they have a method where they can decrease or increase their body temperatures slightly such as torpor in birds?a) How do bears use uncoupling to their advantage during hibernation? b) And where do they get their water from?
- How does low temperature effect the life processes of cold-blooded animals? Select one: a. increases the procceses of heat emission b. decreases the procceses of heat emission c. decresaes heat buildup d. increases heat buildup e. changes the daily activityWhen animals hibernate, they lower their temperature. How would this reduce the rate of heat lost through conduction?Elephant seals do deep dives to forage for food. The energy used by the seals in diving depends on their body composition; for example, fatter seals use less energy to swim to the surface at the end of a dive, allowing them to takelonger, more productive dives. Explain why you’d expect this to be the case.
- list examples of heat dissipation strategies in mammalsHow do mousebirds (Coliiformes) save energy at night?Although hibernators drop their body temperatures, they do manage maintain a body temperature close to or slightly above ambient temperatures in their burrows. They generate or conserve heat in all of the following ways except one. Which is the one? Non shivering thermogenesis Ruffling the pelage Eating more Calories Bouts of intense shivering
