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IB Biology Review questions with answers
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IB Biology Review questions with answers
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IB Biology Review questions withanswers
ecology - .......🔷ANSWERS🔶......✔✔ the study of relationships between living organisms and
between organisms and their environment
ecosystem - .......🔷ANSWERS🔶......✔✔ a system made up of organisms as well as the abiotic
factors in the area
population - .......🔷ANSWERS🔶......✔✔ a group of organisms of the same species who live in the
same area at the same time
community - .......🔷ANSWERS🔶......✔✔ a group of populations living and interacting with each
other in an area
species - .......🔷ANSWERS🔶......✔✔ a group of organisms which can interbreed and produce fertile
offspring
habitat - .......🔷ANSWERS🔶......✔✔ the environment in which a species normally lives or the
location of a living organism
autotrophs - .......🔷ANSWERS🔶......✔✔ producers; they can make their own food
heterotrophs - .......🔷ANSWERS🔶......✔✔ consumers; they feed on ready made organic material
detritivores - .......🔷ANSWERS🔶......✔✔ organisms that feed on the detritus and decomposing
organic material of living organisms
saprotrophs - .......🔷ANSWERS🔶......✔✔ decomposers; organisms that feed on dead organisms and
products of living organisms
, carrying capacity - .......🔷ANSWERS🔶......✔✔ the maximum number of organisms of a species, or
the maximum population size which an environment is able to support
random sample - .......🔷ANSWERS🔶......✔✔ a sample where every individual in a population has
an equal chance of being chosen
trophic level - .......🔷ANSWERS🔶......✔✔ Position in the food chain, determined by the number of
energy-transfer steps to that level; a functional classification of taxa within a community that is
based on feeding relationships
standard deviation - .......🔷ANSWERS🔶......✔✔ used to summarize the spread of values around the
mean; ∑((X-X)²/n-1)
species - .......🔷ANSWERS🔶......✔✔ a group of organisms with similar characteristics, which can
interbreed and produce fertile offspring
protoctista - .......🔷ANSWERS🔶......✔✔ unicellular and multicellular eukaryotic organisms; may be
auto or heterotrophic and live in salt and fresh water
fungi - .......🔷ANSWERS🔶......✔✔ eukaryotic and feed by absorption of nutrients; cell walls are
made of chitin
plantae - .......🔷ANSWERS🔶......✔✔ eukaryotic photosynthetic organisms; cell wall contains
cellulose and cells contain chlorophyll
animalia - .......🔷ANSWERS🔶......✔✔ feed by ingestion
evolution - .......🔷ANSWERS🔶......✔✔ change in a gene pool of a species over a period of time
half-life - .......🔷ANSWERS🔶......✔✔ the number of years it takes for 50% of a sample to decay
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