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Env Sci Ch 8 Test

QuestionAnswer
interaction between two species in which both are harmed competition
the functional role of a species within an ecosystem niche
one of three main properties of an ecosystem density
development of adaptations as a result of symbiotic relationships coevolution
maximum population that an ecosystem can support indefinitely carrying capacity
close interaction between two species in which one organism benefits while the other is harmed parasitism
the ratio of births to deaths in an ecosystem growth rate
maximum number of offspring that each member of a population can produce reproductive potential
a reduction in population size caused by a natural disaster density independent regulation
the location where an organism lives habitat
What is a territory? An area defended by one or more individuals
Which of the following is an example of a parasite? worm in your intestine, a lion hunting zebras, bee stinger in your arm, a honeybee on a flower worm in intestine
Bacteria in your intestine are an example of mutualism if they help you break down food
Predators ______ kill their prey. usually
What property of a population may be described as even, clumped, or random? dispersion
What can happen if a population has plenty of food and space, and has no competition or predators? exponential growth
A grizzly bear can be all of the following except: parasite, competitor, mutualist, predator parasite
The "co-" in co-evolution means: together
Which of the following has the greatest effect on reproductive potential? producing more offspring at one time, reproducing more often, having a longer life span, reproducing earlier in life reproducing earlier in life
Members of a species may compete with each other for: social dominance
A robin that does not affect the tree in which it nests is an example of: commensalism
Two species can be indirect competitors for food if they: use the same food source at different times
a group of the same species that live in the same place at the same time and interbreed population
What are the three properties of a population? Size, Density, Dispersion
The three types of dispersion are random, even, and ______. clumped.
True/False: A W curve represents exponential growth False
When 2 species live in close association with each other, it is known as _______. symbiosis
If heartworms harm their canine host, this would be an example of: parasitism
The equation for growth rate is: birth rate - death rate
Crowded populations that encounter increased death rate due to a parasite. density dependent
Limiting resources can cause __________ among individuals or populations competition
When organisms compete for territory or breeding rights it is ____________________ indirect competition
True/False: The host is killed in parasitic relationships False (not always)
Niche overlap is ___________________. when species occupy the same niche
True/False: A herbivore can have the same benefit that a predator would. True
The recent Austraila wildfires caused density _____________ population regulation independent
Reproducing more often and having the maximum number of offspring can set the __________________________ of a population reproductive potential
When can growth rate equal zero? when births equal deaths
Exponential growth is usually followed by ______________ after a population exceeds the Carrying Capacity logistic growth
Direct competition occurs when species compete for ________________ the same limiting resource
Aside from limiting resources what else can limit a population? competition and carrying capacity
True/False: Species coevolve to increase the benefit to themselves True
True/False: Species coevolve to reduce the harm to themselves in an interaction. True
In a competition, both species are _______. harmed
Created by: aaswell
 

 



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