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Bio- final semester 2
Unit one test
50
Biology
Undergraduate 1
04/19/2008

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Cards

Term
The Biodiversity of a tropical rainforest is so high because of the?
Definition
High amounts of solar irradiance and abundance of water
Term
All the populations of a particular kind of organisms are members of the same?
Definition
Species
Term
As the size of a population approaches its carrying capacity?
Definition
ALL OF THE ABOVE...
a.The growth rate declines to zero
b. a graph repreentation resembles an "s"
c. birth and death rates become equal
d. the population stabilizes at its maximum size.
Term
Eztracts of the rosy periwinkle, Catharus roseus have provided medicine with vincristine and vinblastim, drugs not available for treating cancer. This ability to find this species of plant and preserve these kind of drugs is a strong argument for?
Definition
Preserving Biodiversity
Term
The best strategy for supporting biodiversity is?
Definition
prevent species from becomming endangered in the first place.
Term
The moist air of a tropical rainforeset is due to ?
Definition
Warm air rising at equator, then cooling and condensing and falling on the earth.
Term
Life on Earth is approximatly
Definition
3.6 billion years old.
Term
In a normal heterozygous individual, only one allele is expressed in the phenotype that allele is?
Definition
dominant.
Term
Which pollutant is most implicated in global climate change?
Definition
Co2
Term
Which Activity could best be considered an example of an ecological study?
Definition
Comparing the effects of varying water temperatures and fish egg development
Term
Over the past two centuries, the growth of the human population has?
Definition
Increased exponetially
Term
In some situations the death rate of a population declines before the birth rate begins to decline. This is an example of?
Definition
Demographic transition
Term
In a muliticellular organism, different tissues that function together are grouped into?
Definition
Organs
Term
What statement could best describe ecology?
Definition
The study of oak trees and their interactions with other plants.
Term
Human populations may surpass the carrying capacity of their environment due to?
Definition
A temporary reliance on stored non-renewable sources.
Term
The evenly spaced distribution of stalks of corn planted in an agricultural field is considered?
Definition
Uniform distrubution
Term
A weed is a plant that?
Definition
People don't like it growing where it is.
Term
In a particular country there are 30 birthd and 20 deaths for every 1000 residents. What is the annual growth rate for this population?
Definition
1.0%
Term
If everyone on the planet ised resources and lived the average lifestyle of an American....
Definition
We would need multiple earths for this to be possible
Term
Although most biologist believe that many species are becomming extinct each year because of the activities of humans, relatively few species actually appear on the endangered species list of extinct species. What is one reason so few species are listed as exinct?
Definition
Many species are unknown to science, and probably they go extinct before they have been described.
Term
Life on Earth has experienced five mass extinctions, It is thought that these past episodes of extinction were caused by all of the following except?
Definition
an increase is large predatory animals
Term
The kinds of vegetation found in an area are determined by what?
Definition
Temperature and precipitation
Term
What evolutionary adaptations are necessary for desert plants to survive?
Definition
Shallow roots to quickly capture water and a thick waxy stem.
Term
Coniferous trees (evergreen) are abundant in?
Definition
boreal forest.
Term
The pressure to clear more land for agriculture can be reduced by?
Definition
Supporting birth control measures world wide.
Term
Although carring capacity of a population is determined by food availability, it is also dependent on ?
Definition
clean water, clean air, and reliable ways to manage waste.
Term
Scientist have used fossil records to esimate the average length of time that a species inhabits the earth. Why is this esimate useful for assesing the impact of humans on the Earth's biological diversity?
Definition
it can estimate how many species extinctions are caused by human activity.
Term
Tallgrass prarie was once part of the main ecosystem of Minnesota. What do you think cold be the typical grass species of the above mentioned habitat?
Definition
All of the above... Big blue stem, indian grass, switch grass,
Term
All these ecological service But One can be preformed by insects on a well restored habitiat prarie?
Definition
sexual dimorphism.
Term
Which of the following is a population-limiting density-dependent factor?
Definition
The fast spread of tuberculosis in urban areas.
Term
How do you think prarie plants keep under control the growth of weeds and exotic pecies? What is their best strategy to succeed?
Definition
Their massive root systems that occupy all soil niches.
Term
New England salt marshed ecperience a greater amount of plant growth in a given area in one year that any other temperate ecosystem. These salt marshes:
Definition
Have a high net primary productivity
Term
The web of life refers to the?
Definition
connections between species in an ecosystem
Term
The risk faced by small populations include....
Definition
erosion and genectic variability through genectic drift. and decreased fitness of individuals as a resut of inbreeding.
Term
The relationship between the size of the natural habitiat and the number of secies that the habiitat supports is described by an...
Definition
species area curve
Term
The average american uses as many resources in one day as 370 Ethiopians?
Definition
True
Term
The human population may continue to increase even though it surpasses its carrying capacity
Definition
true
Term
Eutrophication is responsible for the demise of the tropical rian forest?
Definition
False
Term
The human population growth rate us higher now than ever before?
Definition
False
Term
Lakes are freshwater habitiats?
Definition
True
Term
The higher a consumer eats on a food chain, the less amounts of energy are required to sustain it.
Definition
False
Term
Decomposers inhabit the soil ecosystem?
Definition
True
Term
Producers are photosynthetic organisms
Definition
true
Term
Taiga is another name for decidous forest?
Definition
False
Term
The bottom of the ocean is a lifeless part of this biome
Definition
false
Term
Invisible component of matter: the smallest particle
Definition
Atom
Term
Molecule like DNA or ATP?
Definition
Macromolecule
Term
The buildiing blocks of life?
Definition
Cells
Term
Different irgan systems all together?
Definition
Organism
Term
Ecological unit above ecosystem?
Definition
Biome
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