When faced with a sudden drop in environmental temperature, an endothermic animal will:
- experience a drop in its body temperature
- wait to see if it goes lower
- increase muscle activity to generate heat
- add fur or fat to increase insulation
Which is an example of negative feedback?
- lowering of blood glucose after a meal
- blood clotting after an injury
- lactation during nursing
- uterine contractions during labor
Which method of heat exchange occurs during direct contact between the source and animal?
The body’s thermostat is located in the ________.
- homeostatic receptor
- vasodilation center
Which of the following is not true about acclimatization?
- Acclimatization allows animals to compensate for changes in their environment.
- Acclimatization improves function in a new environment.
- Acclimatization occurs when an animal tries to reestablish a homeostatic set point.
- Acclimatization is passed on to offspring of acclimated individuals.
Which of the following is not a way that ectotherms can change their body temperatures?
- Sweating for evaporative cooling.
- Adjusting the timing of their daily activities.
- Seek out or avoid direct sunlight.
- Huddle in a group.