GRCC BI 118 Exam #3 (Answered)
What is biodiversity?
the variety of living things
Why should we protect species? Why save biodiversity?
Losing one species can start a snowball effect. The lose of several species can cause a collapse of an
entire ecosystem.
What is meant by the phrase, we live on an unexplored plant?
There is an estimated 5 to 100 million unknown species, mainly invertebrates and bacteria.
What is the order of classification?
Keep Ponds Clean or Froggies Get Sick
Kingdom, Phylum, Class, Order, Family, Genus, Species
What is a species defined as?
all the organisms genetically similar enough to breed and produce live fertile offspring in nature
Does nature designate a species?
Yes, species are adapted to live in their niche, and a change in this area can cause a species to go
extinct unless they are able to quickly adapt.
What is reproductive isolation?
Different mating times
mating behavior
mechanical difficulties
What is geographic separation?
Why do certain areas have a higher species diversity?
Hint: Ecological Diversity
Areas that tend to be closer to the equator
Have lots of species due to more complex niches or trophic levels
What are the three measures of biodiversity?
Genetic Diversity
Species Diversity
Ecological Diversity
What is species diversity?
number of different kinds of organisms with an an ecosystem
What is genetic diversity?
variety of different versions of the same genes within a species
, What is ecological diversity?
complexity of a biological community (number of niches, trophic levels, etc.)
What are hotspots?
Areas high in endemic species
What are endemic species?
species that are limited to one area/place in the world and are not found any where else
Why is Indonesia an example of mega-diversity? And what are the characteristics does Indonesia
have that allows for this?
High ecological diversity
tropical rainforest (specialized niche)
high primary productivity
Why do so many species live in tropical rainforests?
generally have high ecological diversity
lots of primary productivity ( energy, water, warmth, etc)
stable climate
large area
complex first structure creates lost of niche space
no catastrophic disturbance
a lot of intermediate disturbances (reduces dominance by a few species)
What is the rivet model?
losing one species may not be a big deal, but losing multiple species can cause a collapse of an entire
ecosystem.
In video said to think of Jenga
What are the 7 reasons to save biodiversity?
1) ecological
2) evolutionary
3) utilitarian
4) economic
5) aesthetic
6) ethical / religious / spiritual
7) physiological
How could you argue that a species that goes extinct naturally is not totally extinct? Hint: adaptation
many people believe that dinosaurs passed some genetics to birds
many species that we believe to be extinct will have other species that are similar to them with
adaption
What are the major causes of anthropogenic extinction? Hint HIPPOC
Habitat loos and Fragmentation
Introduction of exotic species
What is biodiversity?
the variety of living things
Why should we protect species? Why save biodiversity?
Losing one species can start a snowball effect. The lose of several species can cause a collapse of an
entire ecosystem.
What is meant by the phrase, we live on an unexplored plant?
There is an estimated 5 to 100 million unknown species, mainly invertebrates and bacteria.
What is the order of classification?
Keep Ponds Clean or Froggies Get Sick
Kingdom, Phylum, Class, Order, Family, Genus, Species
What is a species defined as?
all the organisms genetically similar enough to breed and produce live fertile offspring in nature
Does nature designate a species?
Yes, species are adapted to live in their niche, and a change in this area can cause a species to go
extinct unless they are able to quickly adapt.
What is reproductive isolation?
Different mating times
mating behavior
mechanical difficulties
What is geographic separation?
Why do certain areas have a higher species diversity?
Hint: Ecological Diversity
Areas that tend to be closer to the equator
Have lots of species due to more complex niches or trophic levels
What are the three measures of biodiversity?
Genetic Diversity
Species Diversity
Ecological Diversity
What is species diversity?
number of different kinds of organisms with an an ecosystem
What is genetic diversity?
variety of different versions of the same genes within a species
, What is ecological diversity?
complexity of a biological community (number of niches, trophic levels, etc.)
What are hotspots?
Areas high in endemic species
What are endemic species?
species that are limited to one area/place in the world and are not found any where else
Why is Indonesia an example of mega-diversity? And what are the characteristics does Indonesia
have that allows for this?
High ecological diversity
tropical rainforest (specialized niche)
high primary productivity
Why do so many species live in tropical rainforests?
generally have high ecological diversity
lots of primary productivity ( energy, water, warmth, etc)
stable climate
large area
complex first structure creates lost of niche space
no catastrophic disturbance
a lot of intermediate disturbances (reduces dominance by a few species)
What is the rivet model?
losing one species may not be a big deal, but losing multiple species can cause a collapse of an entire
ecosystem.
In video said to think of Jenga
What are the 7 reasons to save biodiversity?
1) ecological
2) evolutionary
3) utilitarian
4) economic
5) aesthetic
6) ethical / religious / spiritual
7) physiological
How could you argue that a species that goes extinct naturally is not totally extinct? Hint: adaptation
many people believe that dinosaurs passed some genetics to birds
many species that we believe to be extinct will have other species that are similar to them with
adaption
What are the major causes of anthropogenic extinction? Hint HIPPOC
Habitat loos and Fragmentation
Introduction of exotic species
