GRADE 11 BIOLOGY EXAM REVIEW -SOLVED
What are the three levels of biodiversity - ANSWER-1) species diversity
2) genetic diversity
3) ecosystem diversity
Genes - ANSWER-Units of inherited information that determine specific
characteristics or functions
Biodiversity - ANSWER-The variety of life in the world
Genetic diversity - ANSWER-The sum of all the different forms of genes present in a
particular species. It also helps the survival of species
Species - ANSWER-A population whose members can breed freely in nature and
produce fertile offspring
Why do farmers grow a single type of corn? - ANSWER-It allows farmers to use the
same equipment, fertilizers and techniques on their land
Monocultures - ANSWER-Genetically uniform farms, that usually have little or no
biodiversity
Species diversity - ANSWER-The variety of species and relative abundance of the
species in a given area. This allows ecosystems to survive environmental changes
such as droughts, plagues or disease outbreaks
Ecosystem diversity - ANSWER-The diverse range of habitats, the various
organisms that live in the habitats and the relationships that connect them
What kind of organisms or processes does biodiversity help maintain? - ANSWER-1)
ecosystem cycle carbon, nitrogen and oxygen
2) micro-organisms make nutrients available and break down toxic substances in
water and soil
3) insects, bats, and other animals pollinate flowering plants and crops
4) ecosystems clean air, purify water, control erosion,more vent floods and modify
climate
Keystone species - ANSWER-Species that have a disproportionately large effect on
the ecosystem in which they live, such as a honeybee
What is malaria - ANSWER-A deadly disease that is spread through mosquitoes
infecting people. It is called by a microscopic parasite called plasmodium, that
,transmits this disease through it's bite
Why use scientific naming for animals? - ANSWER-To reduce confusion among
different languages around the world, and to have a universal scientific name to
each known species
Dichotomous key - ANSWER-A tool used by scientists and non-scientists to identify
organisms with which they are unfamiliar
What does the work "dichotomous" mean in Greek? - ANSWER-"To cut in two"
What does a dichotomous key posses - ANSWER-It possesses a series of questions
about an organism, and each question asks users to choose between two possible
characteristics that the organism may have
Taxonomy - ANSWER-The science of naming, identifying, and classifying species
Binomial nomenclature - ANSWER-A system for naming specific species, which
became the most used classification system in biology, invented in 1750 by the
Swedish botanist Carolus Linnaeus
What are the two main parts of the binomial nomenclature - ANSWER-1) a two-part
Latin name
2) a hierarchy or ordering of the species into broader and broader groups
Binomial - ANSWER-The two-part Latin name that is part of the binomial
nomenclature
Genus - ANSWER-The first part of the specie's name, to which the species belongs
What are the 8 groups of the binomial nomenclature - ANSWER-1) domain
2) kingdom
3) phylum
4) class
5) Order
6) family
7) genus
8) species
Biodiversity - ANSWER-The variety of life in the world or a particular habitat or
ecosystem
Ecosystem - ANSWER-a specie's environment
Taxonomy - ANSWER-Science of naming, identifying and classifying species
Protist - ANSWER-Eukaryotic organisms that do not fit into the animal, plant or
fungi kingdoms
, Cilia - ANSWER-Short, hair-like structures protruding from a cell that move fluid
and particles over the cell's surface; sometimes used for movement and food
gathering
Flagella - ANSWER-Long, whip-like structures that some cells use for movement
Pseudopodia - ANSWER-Cellular extensions of streaming cytoplasm that enable a
cell to move in the direction of that extensions
Mycorrhizae - ANSWER-Fungus that forms a mutualistic association with roots of a
plant
Phylogenetic tree - ANSWER-A branching diagram that represents the evolutionary
relationships among species or groups
Clade - ANSWER-An evolutionary branch on a phylogentic tree
Phylogeny - ANSWER-The evolutionary development and history of a species or
group of organisms
Morphology - ANSWER-Study of form and structure of organisms
Habitat loss - ANSWER-The greatest threat to biodiversity, where animals loos their
homes
Fragmentation - ANSWER-splitting a habitat into fragments, which may prevent
species from using resources in all parts of the habitat
Deforestration - ANSWER-Clear-cutting trees
Transpiration-pull - ANSWER-Force that pulls water up a woody stem
Radial symmetry - ANSWER-Arrangement having body parts like pieces of a pie
around an imaginary central axis
Bilateral symmetry - ANSWER-Arrangement having mirror-image right and left
sides
Asymmetric - ANSWER-Having no symmetry
Genetically modified organism - ANSWER-An organisms with genetic material that
has been altered thought genetic engineering
Restriction fragment - ANSWER-Pieces of DNA made by cutting it with restriction
enzymes
Cell cycle - ANSWER-Orderly sequence of event in a eukaryotic cell's life
What are the three levels of biodiversity - ANSWER-1) species diversity
2) genetic diversity
3) ecosystem diversity
Genes - ANSWER-Units of inherited information that determine specific
characteristics or functions
Biodiversity - ANSWER-The variety of life in the world
Genetic diversity - ANSWER-The sum of all the different forms of genes present in a
particular species. It also helps the survival of species
Species - ANSWER-A population whose members can breed freely in nature and
produce fertile offspring
Why do farmers grow a single type of corn? - ANSWER-It allows farmers to use the
same equipment, fertilizers and techniques on their land
Monocultures - ANSWER-Genetically uniform farms, that usually have little or no
biodiversity
Species diversity - ANSWER-The variety of species and relative abundance of the
species in a given area. This allows ecosystems to survive environmental changes
such as droughts, plagues or disease outbreaks
Ecosystem diversity - ANSWER-The diverse range of habitats, the various
organisms that live in the habitats and the relationships that connect them
What kind of organisms or processes does biodiversity help maintain? - ANSWER-1)
ecosystem cycle carbon, nitrogen and oxygen
2) micro-organisms make nutrients available and break down toxic substances in
water and soil
3) insects, bats, and other animals pollinate flowering plants and crops
4) ecosystems clean air, purify water, control erosion,more vent floods and modify
climate
Keystone species - ANSWER-Species that have a disproportionately large effect on
the ecosystem in which they live, such as a honeybee
What is malaria - ANSWER-A deadly disease that is spread through mosquitoes
infecting people. It is called by a microscopic parasite called plasmodium, that
,transmits this disease through it's bite
Why use scientific naming for animals? - ANSWER-To reduce confusion among
different languages around the world, and to have a universal scientific name to
each known species
Dichotomous key - ANSWER-A tool used by scientists and non-scientists to identify
organisms with which they are unfamiliar
What does the work "dichotomous" mean in Greek? - ANSWER-"To cut in two"
What does a dichotomous key posses - ANSWER-It possesses a series of questions
about an organism, and each question asks users to choose between two possible
characteristics that the organism may have
Taxonomy - ANSWER-The science of naming, identifying, and classifying species
Binomial nomenclature - ANSWER-A system for naming specific species, which
became the most used classification system in biology, invented in 1750 by the
Swedish botanist Carolus Linnaeus
What are the two main parts of the binomial nomenclature - ANSWER-1) a two-part
Latin name
2) a hierarchy or ordering of the species into broader and broader groups
Binomial - ANSWER-The two-part Latin name that is part of the binomial
nomenclature
Genus - ANSWER-The first part of the specie's name, to which the species belongs
What are the 8 groups of the binomial nomenclature - ANSWER-1) domain
2) kingdom
3) phylum
4) class
5) Order
6) family
7) genus
8) species
Biodiversity - ANSWER-The variety of life in the world or a particular habitat or
ecosystem
Ecosystem - ANSWER-a specie's environment
Taxonomy - ANSWER-Science of naming, identifying and classifying species
Protist - ANSWER-Eukaryotic organisms that do not fit into the animal, plant or
fungi kingdoms
, Cilia - ANSWER-Short, hair-like structures protruding from a cell that move fluid
and particles over the cell's surface; sometimes used for movement and food
gathering
Flagella - ANSWER-Long, whip-like structures that some cells use for movement
Pseudopodia - ANSWER-Cellular extensions of streaming cytoplasm that enable a
cell to move in the direction of that extensions
Mycorrhizae - ANSWER-Fungus that forms a mutualistic association with roots of a
plant
Phylogenetic tree - ANSWER-A branching diagram that represents the evolutionary
relationships among species or groups
Clade - ANSWER-An evolutionary branch on a phylogentic tree
Phylogeny - ANSWER-The evolutionary development and history of a species or
group of organisms
Morphology - ANSWER-Study of form and structure of organisms
Habitat loss - ANSWER-The greatest threat to biodiversity, where animals loos their
homes
Fragmentation - ANSWER-splitting a habitat into fragments, which may prevent
species from using resources in all parts of the habitat
Deforestration - ANSWER-Clear-cutting trees
Transpiration-pull - ANSWER-Force that pulls water up a woody stem
Radial symmetry - ANSWER-Arrangement having body parts like pieces of a pie
around an imaginary central axis
Bilateral symmetry - ANSWER-Arrangement having mirror-image right and left
sides
Asymmetric - ANSWER-Having no symmetry
Genetically modified organism - ANSWER-An organisms with genetic material that
has been altered thought genetic engineering
Restriction fragment - ANSWER-Pieces of DNA made by cutting it with restriction
enzymes
Cell cycle - ANSWER-Orderly sequence of event in a eukaryotic cell's life
