Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Migration is the seasonal movement of animals from one region to another to escape harsh weather, search for food, or reach breeding grounds. For example, the Arctic Tern travels a distance of approximately twice a year.
Hibernation, also known as 'winter sleep,' is a state of deep inactivity where animals conserve energy during cold months when food is scarce. During this period, the body temperature drops significantly, sometimes reaching near .
Metabolic changes during hibernation include a drastic reduction in heart rate and breathing. For instance, a squirrel's heart rate might drop from beats per minute to just beats per minute.
Aestivation is 'summer sleep,' where animals like snails or lungfish go into a state of dormancy to escape extreme heat and prevent water loss (desiccation) during droughts.
Animals like the Monarch Butterfly migrate nearly from Canada to Mexico. They use environmental cues and the earth's magnetic field for navigation.
Survival depends on the accumulation of body fat before the winter season, which serves as an energy reserve () during the dormant phase.
📐Formulae
💡Examples
Problem 1:
An Arctic Tern travels approximately to reach its destination and then returns. Calculate the total distance covered in one full cycle.
Solution:
Explanation:
Migration involves a two-way journey: one to the warmer region and one back to the original habitat when the season changes.
Problem 2:
If a hibernating animal's normal body temperature is and it drops to during hibernation, what is the change in temperature ?
Solution:
Explanation:
Hibernating animals significantly lower their body temperature to reduce the energy required to stay alive while sleeping through the winter.
Problem 3:
Identify the behavior: A frog buries itself in the mud at the bottom of a pond during a very dry, hot summer.
Solution:
Aestivation
Explanation:
Aestivation is the process where animals become dormant during hot and dry periods to conserve water and stay cool, unlike hibernation which happens in winter.