Thermoregulation in Organisms
Biology ⇒ Biological Systems and Homeostasis
Thermoregulation in Organisms starts at 7 and continues till grade 12.
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Describe how fur and feathers help in thermoregulation.
Describe how the hypothalamus detects changes in body temperature.
Describe how vasoconstriction helps conserve heat in cold environments.
Describe the negative feedback mechanism involved in thermoregulation.
Describe the role of brown adipose tissue in thermoregulation.
Describe the role of sweating in human thermoregulation.
Describe two physiological responses that occur in humans when the body temperature rises above normal.
A lizard moves from a sunny rock to a shaded area during midday. What type of thermoregulatory behavior is this? (1) Physiological (2) Behavioral (3) Structural (4) Genetic
A lizard moves from a sunny rock to a shaded area during midday. What type of thermoregulatory behavior is this? (1) Physiological (2) Behavioral (3) Structural (4) Genetic
Which of the following animals is an example of an endotherm? (1) Frog (2) Lizard (3) Bird (4) Snake
Which of the following is a behavioral adaptation for thermoregulation? (1) Sweating (2) Seeking shade (3) Vasodilation (4) Shivering
Which of the following is a consequence of hyperthermia? (1) Frostbite (2) Heat stroke (3) Hypothermia (4) Dehydration
Fill in the blank: The ability of an organism to maintain a relatively constant internal temperature is called __________.
Fill in the blank: The normal human body temperature is approximately __________ °C.
Fill in the blank: The process by which animals reduce their metabolic rate and body temperature to survive periods of high temperature or drought is called __________.
Fill in the blank: The process by which heat is transferred from one object to another through direct contact is called __________.
True or False: Birds use their feathers to both insulate against cold and to help cool down by fluffing or flattening them.
True or False: Ectothermic animals rely mainly on external sources of heat to regulate their body temperature.
True or False: Evaporation of sweat from the skin surface cools the body.
True or False: Homeotherms maintain a constant internal body temperature regardless of external conditions.
