Question 1

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.

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The answer of Explain the pathway involved to determine an...

Question 2

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

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The answer of Discuss the distinctions between ectothermy, endothermy, poikilothermy,...

Question 3

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

Accepted Answer

A) sulfur. 
B) sodium. 
C) magnesium. 
D) calcium.

Question 4

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

Accepted Answer

A) the rule of diminishing returns. 
B) temperature/size trade-off. 
C) Bergmann's rule. 
D) Hardy-Weinberg principle.

Question 5

________ is often the least available nutrient in terrestrial environments.

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The answer of ________ is often the least available nutrient...

Question 6

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

Accepted Answer

A) inhalation. 
B) respiration. 
C) diffusion. 
D) countercurrent exchange.

Question 7

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

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The answer of Use an example to explain how poikilotherms...

Question 8

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

Accepted Answer

A) conduction. 
B) evaporation. 
C) convection. 
D) radiation.

Question 9

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

Accepted Answer

A) melatonin 
B) melanin 
C) carbon dioxide 
D) glucose

Question 10

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

Accepted Answer

A) brain 
B) heart 
C) stomach 
D) mouth

Question 11

The primary problem for carnivores is to digest enough cellulose.

Accepted Answer

A) True 
 B)False

Question 12

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

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The answer of That organisms rely on multiple environmental cues...

Question 13

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

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The answer of Animals that feed exclusively on plant tissue...

Question 14

Describe two animal adaptations for conserving water in arid environments.

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The answer of Describe two animal adaptations for conserving water...

Question 15

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

Accepted Answer

A) large endotherm. 
B) small endotherm. 
C) large ectotherm. 
D) small ectotherm.

Question 16

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

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The answer of The circadian rhythm of many intertidal species...

Question 17

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

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The answer of ________ is the maintenance by an animal...

Question 18

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

Accepted Answer

A) diapause. 
B) hibernation. 
C) behavioural thermoregulation. 
D) torpor.

Question 19

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

Accepted Answer