BIO 121 Chapter 8 UPDATED ACTUAL
Exam Questions and CORRECT Answers
biodiversity - CORRECT ANSWER - The variety of life across all levels of biological
organization
genetic diversity
-Provides the raw material for adaptation to local conditions
-Natural selection cannot lead to evolution or adaptation if all individuals in a population are
exactly the same - CORRECT ANSWER - genetic variation within a population and
between populations
species diversity - CORRECT ANSWER - the number or variety of species found in a
region
ecosystem diversity
-Areas with a variety of vegetation hold more biodiversity than areas the same size with one
plant type
-Sizes, shapes, and connections among patches matter - CORRECT ANSWER - the
number and variety of ecosystems, communities, or habitats
species - CORRECT ANSWER - a set of organisms that share unique characteristics and
can breed and produce fertile offspring
genetic - CORRECT ANSWER - Populations with little ___ diversity are more likely to
suffer inbreeding depression and be vulnerable to environmental change, as they lack the
variation needed to help adapt to new conditions.
species richness - CORRECT ANSWER - describes the number of species in an area
, Evenness or relative abundance - CORRECT ANSWER - describes how much the species
differ from each other in numbers of individuals in an area
genetic - CORRECT ANSWER - Populations with higher ___ diversity survive better and
can better cope with environmental change, stress or disease.
subspecies - CORRECT ANSWER - Populations of species that occur in different areas
and differ slightly from each other
Inbreeding depression
examples: American bison, elephant seals, cheetahs, domestic dog breeds, past royal families,
past amish societies - CORRECT ANSWER - In small or isolated populations with low
genetic diversity, genetically similar parents mate and produce weak, defective, or inferior
offspring. This is called?
occurs when a natural disaster forces a certain species into near extinction; the few individual
species that are left are forced to mate with each other, sometimes inbreeding, thus causing
almost no variation in the gene pool; can cause a problem if a disease starts to infect and kill
some of the individual species.
example: cheetahs are now on the endangered list because their small gene pool, which is 97%
identical, is inhibiting successful reproduction and adaptation - CORRECT ANSWER -
describe the bottleneck effect and an example
-Insects, for example, are the most diverse group of organisms
-Beetles outnumber all non-insect animals and plants - CORRECT ANSWER - Some
groups of organisms include more species than others like...?
equator
Due to:
Exam Questions and CORRECT Answers
biodiversity - CORRECT ANSWER - The variety of life across all levels of biological
organization
genetic diversity
-Provides the raw material for adaptation to local conditions
-Natural selection cannot lead to evolution or adaptation if all individuals in a population are
exactly the same - CORRECT ANSWER - genetic variation within a population and
between populations
species diversity - CORRECT ANSWER - the number or variety of species found in a
region
ecosystem diversity
-Areas with a variety of vegetation hold more biodiversity than areas the same size with one
plant type
-Sizes, shapes, and connections among patches matter - CORRECT ANSWER - the
number and variety of ecosystems, communities, or habitats
species - CORRECT ANSWER - a set of organisms that share unique characteristics and
can breed and produce fertile offspring
genetic - CORRECT ANSWER - Populations with little ___ diversity are more likely to
suffer inbreeding depression and be vulnerable to environmental change, as they lack the
variation needed to help adapt to new conditions.
species richness - CORRECT ANSWER - describes the number of species in an area
, Evenness or relative abundance - CORRECT ANSWER - describes how much the species
differ from each other in numbers of individuals in an area
genetic - CORRECT ANSWER - Populations with higher ___ diversity survive better and
can better cope with environmental change, stress or disease.
subspecies - CORRECT ANSWER - Populations of species that occur in different areas
and differ slightly from each other
Inbreeding depression
examples: American bison, elephant seals, cheetahs, domestic dog breeds, past royal families,
past amish societies - CORRECT ANSWER - In small or isolated populations with low
genetic diversity, genetically similar parents mate and produce weak, defective, or inferior
offspring. This is called?
occurs when a natural disaster forces a certain species into near extinction; the few individual
species that are left are forced to mate with each other, sometimes inbreeding, thus causing
almost no variation in the gene pool; can cause a problem if a disease starts to infect and kill
some of the individual species.
example: cheetahs are now on the endangered list because their small gene pool, which is 97%
identical, is inhibiting successful reproduction and adaptation - CORRECT ANSWER -
describe the bottleneck effect and an example
-Insects, for example, are the most diverse group of organisms
-Beetles outnumber all non-insect animals and plants - CORRECT ANSWER - Some
groups of organisms include more species than others like...?
equator
Due to:
