Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Please explain why B is the correct answers. I'm not sure why this is correct based on the graph given. Thank you very much!
Transcribed Image Text:**Graph Explanation:**
The graph illustrates the relationship between temperature (°C) and metabolic rate (kcal h⁻¹) for the willow ptarmigan during different seasons (summer and winter). The x-axis represents the temperature scale from -60°C to 40°C, while the y-axis represents the metabolic rate, ranging from 0 to 8 kcal h⁻¹.
- **Data Points:** Black circles represent recorded metabolic rates; filled circles denote recordings from both summer and winter.
- **Trend Line:** Solid lines depict the general trends for the metabolic rates during winter and summer. The winter line shows a steeper increase in metabolic rate with decreasing temperature, indicating a higher metabolic activity in colder temperatures compared to the summer.
**Text and Questions:**
Based on the data provided in the graph above, regarding the willow ptarmigan:
Selected Answer:
- **C. is an ectotherm**
Possible Answers:
- a. has a higher metabolic rate during the winter
- b. is an endotherm
- c. is an ectotherm
- d. both a) and b) are correct, and c) is incorrect
- e. a), b) and c) are all correct.
(Source: Ricklefs 1993, Fig 10.11)
Expert Solution
Step 1
Thermoregulation is a process that helps to maintain body temperatures. A constant body temperature is maintained in extreme environments and weather which requires more adaptive modifications in biochemical pathways.
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