WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 16, Problem 2SA
Summary Introduction
To review:
The difference between density-dependent and density-independent factors that limit population growth, with examples.
Introduction:
Populations cannot grow forever at an unlimited exponential rate, since they are limited by various external factors.
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What’s the difference between density dependent and density independentlimiting factors?
Give two examples of density-dependent and two examples of density-independent factors that can limit the growth of a population.
When does the growth rate of a population following the logistic model equal zero?the logistic model is given as dN/dt = rN (1-N/K)
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WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Give an example of how density-dependent and density-independent factors might interact.arrow_forwardWrite a generalized model for exponential population growth. Define your terms. Then, draw a plot showing an example, being sure to label your axes. Write a formula that extends the preceding model to incorporate carrying capacity, producing sigmoidal population growth. Define your terms. Then, draw a plot showing an example, being sure to label your axes.arrow_forwardWrite a generalized model for exponential population growth. Define your terms. Then, draw a plot showing an example, being sure to label your axes.arrow_forward
- ASAParrow_forwardIn the logistic model of population growth what are N and K and what happens if N>K and explain why. Ho w is the population growth affected if N=K?arrow_forwardDefine the following and give examples of each:Density independent limiting factor - Density dependent limiting factor -arrow_forward
- Compare exponential J-curve growth (line A) to logistic S-curve growth (line B). Explain the conditions under which each might occur in might. ✓ ✓ A Carrying Capacity (K) it Number of Individuals B Timearrow_forwardWhat is the difference between density dependent and density independent limiting factors?arrow_forwardShow how you build the logistic model for population growth from the exponential model equation? What part of the logistic growth equation produces the sigmoidal growth curve?arrow_forward
- Would you give a real life example (not hypothetical) of crude density and ecological density?arrow_forwardIn the development of the exponential model of population growth, why can B and D be substituted by bN and dN, respectively? Explain.arrow_forwardWhat is the major difference between the geometric population growth equation and the exponential population growth equation and when would you use one over the other?arrow_forward
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