Populations and Biodiversity Unit Test Flashcards
a populations ________ is usually described as even, clumped, or random.
dispersion
A robin that does not affect the tree in which it nests is an example of _______
commensalism
If two species use the same food source at different times, they are _______ competitors
indirect
unlike a predator in relation to its prey, a parasite does not usually _____ its host
kill
The average age at which members of a species reproduce is that species’ __________
Reproductive potential
the maximum number of offspring that each member of a population can produce is the population’s _________ __________
reproductive potential
the three main properties used to describe a population are _____, ______, and ________
size; density; dispersion
the _______ _______ of an ecosystem for a particular species is the maximum population that the ecosystem can support indefinitely
carrying capacity
the amount of food available for wolves in an area determines the ecosystem’s carrying capacity for wolves and is a _______ resource for wolves
limiting
Members of a species compete indirectly for resources by competing for a ________ and for social dominance
territory
a population’s ______ is the number of its members per unit area or per volume
density
deaths that are caused by a disease spreading through a population are ________ dependent
density
a species’ _____ includes that species’ physical home, the environmental factors necessary for that species’ survival, and all its interactions with other species
niche
a type of interaction between two species in which both species are harmed is _________
Competition
Niche _______is when each species use less of the niche than it is capable of using, in order to reduce competition for resources with other species
restriction
the organisms in a cow’s stomach have a constant source of food; the organisms help the cow break down and use the grass as it eats. This type of relationship is an example of _________
mutualism
a populations growth rate is its _____ rate minus its ______ rate
birth
death
the type of interaction between cats and mice is ________
predation
A liver fluke is a ______that harms its host as it obtains food
parasite
A ________ usually only weakens it host, while a ______usually kills its prey
Parasite
predator
a relationship in which two organisms live in close association, such as mutualism and commensalism, is called ________
symbiosis
If a pair of mice finds a place to live with plenty of food and no predators, the population of mice will probably undergo_________growth
expotential
Over a long period of time, two species can develop adaptations that increase the benefit of their relationship in the process of _________
coevolution
a population has a _________growth rate when the death rate is higher that the birth rate
negative
the number and variety of species on Earth is called_________
biodiversity
the illegal hunting and slaughter of African elephants for their ivory tusks is also known as _______
poaching
A __________is any that is essential to the health of an ecosystem
keystone species
a recreational experience among life forms and ecosystem is called ________
ecotourism
any species with a declining population that could become endangered is a _________________
threatened species
a plan designed to protect one or more species in a large tract of land is known as a _____________________plan
habitat conservation
a _____ is a segment of DNA that codes for a specific trait
gene
an ____________________ is any species likely to become extinct if it is not protected
endangered species
the ___________________is a treaty to preserve biodiversity that resulted from the Earth Summit in 1992
Biodiversity Treaty
a ____________________provides storage for germ cells (such as seeds or DNA) of organisms that may become endangered
germ plasm bank
the death of many species in a relatively short time is known as
Mass extinction
an _____________is an organism that is not native to a particular region
exotic species
a ____________is an organism that is critical to an ecosystem’s functioning
keystone species
the content of plant seeds is also known as _______________
germ plasm
the kind of diversity represented by all the different genes found in a population is called ____________________
genetic diversity
the sources of many antibiotics are in chemicals produced by _________
fungi
a crop produced by combining genetic materials is called ___________
hybrid variety
a population in which _________takes place may be prone to inherited diseases
inbreeding
fire ants in the southeastern U.S. are an example of an _________________
exotic species
the passenger pigeon is an example of a bird that was once abundant in the U.S. but is now _________
extinct
the florida panther is an __________________as a result of habitat destruction
endangered species
honeycreepers found in Hawaiian Islands are an example of an _________________
endemic species
the Amazon rainforest is an example of a habitat with a high species variability known as a ___________________
biodiversity hotspot
the application of biological sciences to create products such as drugs from plants or other organisms is known as ________________
biotechnology
a ______________________program is being used to help increase the population of California condors
captive breeding
If a population of rabbits experiences expotential growth, what might happen to the population of coyote in the area. Explain
coyotes might experience expotential growth more will be able to survive and reproduce because coyotes eat rabbits
predict what might happen to the population of rabbits and coyotes if the rabbits exceed the carrying capacity of the environment. Explain
starvation and diseases might occur, because more animals use more resources so rabbits will start to die off and so will coyotes because rabbits are what they eat
What are two main benefits of protecting entire ecosystems rather than individual species of plants or animals?
species in that ecosystem might not have been discovered and might protect save more than one species by protecting an entire ecosystem
