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BIO 182 EXAM 3 - WEAVER (ASU SPRING 2024) QUESTIONS AND ANSWERS WITH SOLUTIONS
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BIO 182 EXAM 3 - WEAVER (ASU SPRING 2024) QUESTIONS AND ANSWERS WITH SOLUTIONS
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BIO 182 EXAM 3 - WEAVER (ASU SPRING2024) QUESTIONS AND ANSWERS WITH
SOLUTIONS
Abiotic Factor - ANSWER Non-living aspects affect organisms.
Biotic Factor - ANSWER Living aspects affect organisms
Fundamental Niche - ANSWER the range of conditions that a organisms can handle (yellow area)
Realized Niche - ANSWER The niche species actually lives (green area)
The niche of a species... - ANSWER Limits its geographic distribution
Topt - ANSWER Optimal temperatures for species
CTmin - ANSWER (Critical Temperature MIN) The lowest temperature a species can go (see right of the
image)
CTmax - ANSWER (Critical Temperature MAX) The highest temperature a species can go (see left of the
image)
Characteristics of a population - ANSWER Size, distribution, density, dispersion, age range, and structure
& life history
Transects - ANSWER Measuring a section of an ecosystem to measure a certain population of wildelife
Mark and recapture - ANSWER Technique used to determine population size in populations. Used by
marking animals and tracking them.
, Photo traps - ANSWER The technique of using a blended-in camera to track certain populations of
wildlife
Aerial surveys - ANSWER Tracking wildlife with a fixed wing air craft or helicopter. AKA tracking services
in the air.
Radio tagging - ANSWER Putting a radio transmitter onto an animal (best used for tracking birds)
Visual census - ANSWER A way to track animals by looking at them visually (best used for
swimming/underwater wildlife)
Mark and recapture formula - ANSWER (# first catch [n1]) * (# second catch [n2])/ (# of tagged caught
[m2]) = N
Contributors to the increase and decrease of population - ANSWER Immigration, Emigration, Births, &
Deaths
Population changes formula - ANSWER FIRST: Change in species (ΔN) = (N1 [final population observation]
- N0 [initial population observation]) OR (Births-Deaths) + (Immigration-Emigration)
THEN:
(Change in Population [ΔN])/(Original Population [N1])
Predicting future years - ANSWER Population of calculated year (N0) + (Growth rate (R) * Population of
calculated year (N0)
For exponential growth (explanation)... - ANSWER Per capita is constant, but the actual number of
individuals grow due to new births.
Challenges in measuring populations - ANSWER How do we ACTUALLY define a geographic region?
What time frame do we use?
How do we define an individual?
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