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BIO 265 EXAM 2 UH MANOA JUSTIN WALGUARNEY EXAM NEWEST 2024 WITH COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS (DETAILED ANSWERS) ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS!!! $22.99
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BIO 265 EXAM 2 UH MANOA JUSTIN WALGUARNEY EXAM NEWEST 2024 WITH COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS (DETAILED ANSWERS) ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS!!!

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BIO 265 EXAM 2 UH MANOA JUSTIN WALGUARNEY EXAM NEWEST 2024 WITH COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS (DETAILED ANSWERS) ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS!!!

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  • December 15, 2024
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BIO 265 EXAM 2 UH MANOA JUSTIN WALGUARNEY
EXAM NEWEST 2024 WITH COMPLETE QUESTIONS
AND CORRECT VERIFIED ANSWERS (DETAILED
ANSWERS) ALREADY GRADED A+ 100%
GUARANTEED TO PASS CONCEPTS!!!
What is the Definition of Population? - (answers)A group of individuals of a single species
living in the same general Area.-Have same resources -Influenced by same enviromental factors
-Likely to interact and breed with one another.



What is Population Genetics? - (answers)Uses math and empirical studies to understand allele
frequency distributions and changes, including those that lead to adaptation and speciation



What is Population Ecology? - (answers)Study of populations in relation to their environment.



What are the 4 environmental influences? - (answers)1)Density 2)Distribution 3)Age structure
4)Dynamics (changes in size)



What is a closed population? - (answers)Where membership is stable. Changes in Population
only happen through Birth or Death.



What is an open population? - (answers)Where membership (# in pop) can change. This can be
due to immigration and emigration as well as Birth and death.



What is Population Density? - (answers)Result of an interplay between process that add
individuals to a population and those that remove individuals (Births and Immigration add
whereas Deaths and Emigration remove)

,What are some simple cast assumptions for annual plants and insects? - (answers)1)Rate of
reproduction of an individual remains constant.2)Individuals only breed once, generations do not
overlap.



Another Simple Case assumption? - (answers)The rate at which a population increases is a
simple multiple of the number of individuals already present in the populations.Ex: Gen 1: 10
Individ Gen 2: 10 X 2 Indiviud Gen 3: 10 X 4 indivud



What is the Exponential Population equation? - (answers)N(t)=R^t * N(i)




Ex: What is the population size if we start with 1000 individuals with net replacement rate per
generation of 2 and watch them increase for 5 generations?N(5)= 2^5 x 1000 = 32,000



What is the rate of increase if it increases in size by 50% in one generation? - (answers)R= 1.5



A population was observed to increase from 5000 to 6000 individuals in one year, What is the
rate of increase? - (answers)Rate of increase = 6000/5000



How to figure out rate of increase? - (answers)Population Final/Population Initial



What is the exponential growth equation for continuous breeding? - (answers)dN/dt= B-D = (b-
d)N =rNr= b-d ( INTRINSIC RATE OF INCREASE)B= instantaneous birth rate(B=b *N)
(b=avg birth rate)D= instantaneous death rate. (D=d*N) (d= avg death rate)



What is r? - (answers)Intrinsic Rate of increase Also gives the slope of the line dN/dT



What does it mean when r=0? - (answers)No change in numbers over time.dN/dt= 0

, What if r is less than 0 (Negative? - (answers)Population will decline over timedN/dt is negative



What if r is positive? - (answers)Population will increase over time.dN/dt is positive



What is the integral form for exponential growth? - (answers)N(t)= N(0) * e^rt

N(0)=Initial Population N(t)= Population at t e= 2.71828 r is intrinsic rate of increase



Difference between the differential form and integral form of population growth? -
(answers)Differential form (dN/dt=rN) finds the CHANGE in population size.Integral form
(Nt=N0*e^rt) finds the actual new population size.



Important thing to remember about exponential growth. - (answers)If it is positive, it will
increase exponentially and forever. HOWEVER, no organism can increase indefinitely, so the
logistic model has a limit modification to the equation.As size/growth exponentially increases, it
will decrease growth in population.



How do you figure the stable population size occur? (Hint: Equation) - (answers)N=(b0
d0)/(kb+kd)

When Birth Rate-Death rate/ Sum of carrying capacty THIS IS ALSO THE CARRYING
CAPACITY (Max Sustainable Pop Size)



How to figure the carry capactiy? - (answers)Remember kb+kd= r/K



What is the logistic population growth equation? - (answers)dN/dt= rN(K-N)/K

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