Exam 7: Animal Adaptations to the Environment

Explain the pathway involved to determine an animal's circadian rhythm. Include the following terms in your explanation: critical day length, light, melatonin, photoperiod, photoreception, pineal gland, and pituitary gland.

Discuss the distinctions between ectothermy, endothermy, poikilothermy, and homeothermy.

All the following minerals are provided to animals at a mineral-lick, EXCEPT

Colder climates tend to have larger-sized homeotherms. This trend is stated as

________ is often the least available nutrient in terrestrial environments.

Water flows over gills in the opposite direction as blood flow in a process known as

Use an example to explain how poikilotherms change behaviour and exploit microclimates to regulate body temperature.

The transfer of heat energy between a solid and a moving fluid (air or water)is known as

Secretion of ________ from the pineal gland peaks at night and declines during the day.

Which of the following is a feature that allows for long-distance transport of oxygen to animal cells?

The primary problem for carnivores is to digest enough cellulose.

That organisms rely on multiple environmental cues to determine circadian rhythms is known as ________.

Animals that feed exclusively on plant tissue as food are called ________.

Describe two animal adaptations for conserving water in arid environments.

The basal metabolic rate per unit of body mass is highest in a

The circadian rhythm of many intertidal species is determined by ________.

________ is the maintenance by an animal of a relatively constant internal environment in a varying external environment.

The dropping of body temperature to approximately ambient temperature for part of a day is called

During spring, vegetation is higher in potassium relative to calcium and magnesium.

Describe the physiological consequences suffered by ruminants when the mineral content of vegetation is low (e.g., springtime).