Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 27, Problem 3FIB
Summary Introduction
Introduction:
The changes in a population number could be due to birth rate, death rate, immigration, and emigration. A wide gap between the birth and death rate could lead to faster growth in rate of population. Death and emigration lead to decrease individuals from a population and birth and immigration lead to adding individuals in a population.
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Why does the growth curve line become flat after initially increasing?
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logistic
normal
geometric
Time
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exponential
Some Terms Related to Growth Patterns
Biotic potential
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Carrying capacity
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A growth pattern that forms a J-shaped curve. Answer
The theoretical population size that a given region can sustain over a prolonged time period. Answer
Chapter 27 Solutions
Biology
Ch. 27.1 - Prob. 1CSCCh. 27.1 - Prob. 1HYEWCh. 27.1 - The Return of the Elephant Seals Female elephant...Ch. 27.1 - Prob. 1CYLCh. 27.1 - describe how the growth rate interacts with...Ch. 27.1 - Prob. 3CYLCh. 27.2 - What factors might make these population data...Ch. 27.2 - Prob. 2TCCh. 27.2 - What benefits does mass emigration give to animals...Ch. 27.2 - Prob. 1CSC
Ch. 27.2 - Prob. 1CYLCh. 27.2 - Prob. 2CYLCh. 27.2 - Prob. 3CYLCh. 27.3 - Prob. 1CYLCh. 27.3 - Prob. 2CYLCh. 27.3 - Prob. 3CYLCh. 27.4 - Prob. 1CYLCh. 27.4 - Prob. 1CTCh. 27.5 - Prob. 1TCCh. 27.5 - Prob. 2TCCh. 27.5 - Prob. 3TCCh. 27.5 - describe the advances that have allowed...Ch. 27.5 - explain why rapid population growth continues...Ch. 27.5 - Prob. 3CYLCh. 27.5 - Prob. 4CYLCh. 27 - Prob. 1MCCh. 27 - Prob. 2MCCh. 27 - Prob. 3MCCh. 27 - Prob. 4MCCh. 27 - Prob. 5MCCh. 27 - Prob. 1FIBCh. 27 - The type of growth that occurs in a population...Ch. 27 - Prob. 3FIBCh. 27 - The type of spatial distribution likely to occur...Ch. 27 - Prob. 5FIBCh. 27 - Prob. 1RQCh. 27 - Prob. 2RQCh. 27 - Draw, name, and describe the properties of a...Ch. 27 - Prob. 4RQCh. 27 - What is logistic population growth? What is K?Ch. 27 - Prob. 6RQCh. 27 - Distinguish between populations showing concave...Ch. 27 - Prob. 8RQCh. 27 - Prob. 9RQCh. 27 - Prob. 1ACCh. 27 - Prob. 2AC
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- In a graph of population size versus time, a J-shaped curve is characteristic of (a) exponential population growth (b) logistic population growth (c) zero population growth (d) replacement-level fertility (e) population growth momentumarrow_forwardMatch each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarcearrow_forwardWhich of the following is the term used to describe the downward pressure that the environment places on a population’s growth? Select one: Carrying capacity None of the above are correct Biotic potential Environmental resistancearrow_forward
- Which of the following statements about logistic growth is not correct? A population growing logistically has reached the carrying capacity of the environment in which it lives. A logistically growing population is represented by an S-shaped curve. When a population is growing logistically, it is limited by factors such as food supply and water. In a logistically growing population, the birth rate is much greater than the death rate.arrow_forwardThe type of growth that occurs in a population that grows by a constant percentage per year is________ . Does this form of growth add the same number of individuals each year?_______ What shape of curve is generated if this type of growth is graphed?______ Can this type of growth be sustained indefinitely?______arrow_forwardWhere is the growth rate the fastest on a logistic growth curve? at the inflection point in the very beginning when the population is small right before it reaches the carrying capacityarrow_forward
- When per capita growth rate (r) is a positive number, the population size is: a decreasing if it is under 1, increasing if it is over 1 b decreasing c stable (doesn't increase or decrease) d increasingarrow_forwardThe maximum sustainable yield (MSY) is the highest rate at which a potentially renewable resource can be used indefinitely without reducing its available supply. The idea is to remove individuals while keeping the population at a constant growth rate and size, but to find the size where the harvest is maximized. The greater the growth rate, the more individuals you can remove and not change the population size. Where is the growth rate at its maximum? To find this look at your logistic model simulator. 1. Set up a hypothetical salmon population where the carrying capacity is 20,000 fish, the maximumr is 0.7. According the the maximum sustainable yield (MSY), at what population size should we maintain the salmon while fishing?arrow_forwardA population is expected to grow exponentially when the population size is close but below the carrying capacity of the environment. when the population size is exceeding the carrying capacity of the environment. when the birth rate changes as a function of the population after a severe population bottleneck.arrow_forward
- Region 2 on the graph above represents ___i___ population growth. Region 3 of the graph is unusual in that it usually shows a slight fluctuation in the form of a ___ii___ curve.arrow_forwardWhich of the following growth models has a constant instantaneous population growth rate (dN/dt) regardless of population size? Select "yes" or "no" for each. logistic [ Choose ] exponential [ Choose ] cycling [ Choose ]arrow_forwardRead and highlight ways limiting factors affect the population growth Examples of how limiting factors affect population growth Abiotic (nonliving) limiting factors include things like wildfire, hurricanes, pollutants, droughts, floods and seasonal climate extremes. These factors limit all populations in a given area regardless of the size of the population. For example, a wildfire that sweeps through a dense forest in the Everglades has a big impact on every population in the ecosystem, regardless of how big the population is. Limiting factors can also be biotic-having to do with living organisms. Competition and predation are examples of biotic living factors. Organisms compete for available resources like food, water, and shelter. If the resources are plentiful then the populations can increase because there is less competition. If the resources are decreased in an area, competition increases and population size decreases. For example Mountain chickadees (Parus gambeli) compete for…arrow_forward
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