WorksheetsIB Biology Option C key terms
Total questions: 10
Worksheet time: 6mins
Define community.
group of organisms living and interacting with each other in an area
group of populations living and interacting with each other in an area
group of organisms living and interacting with each other in an area at the same time
abiotic and biotic factors that affect a population
Which of the following represents the actual mode of existence in which a species can be found?
ecological niche
fundamental niche
realised niche
zone of intolerance
Identify the key term shown in the graph.
realised niche
competitive exclusion
zone of intolerance
mutualism
Define commensalism
the interaction between two organisms where one benefits and the other neither benefits nor is harmed.
the interaction of two species where one (the parasite) feeds on and derives benefit from the other (the host) which consequently suffers.
the interaction of two species where both benefit.
the interaction between two living organisms where one catches, kills and eats the other.
Define trophic level
show the energy being passed from one organism to another
the position an organism occupies in a food chain
the position a population occupies in a food chain
the position an organism occupies in a mesocosm
define homeotherm
an animal which maintains a regulated body temperature through physiological mechanisms.
an animal which has a variable body temperature according to the surrounding environment
an animal that can live within a wider zone of intolerance
maintaining a constant internal environment
Which of the following is an acceptable unit for energy in a food chain?
J m-2 yr-1
J m-2 yr2
J2 m-2 yr-1
J m-2 min-1
Identify the key term being described by the sequence of events: bare rock, colonised by pioneer species, topsoil layer created, grasses grow and displace pioneer species, shrub growth, soil depth promotes tree growth
succession
primary succession
secondary succession
fundamental niche
Which of these is the total amount of organic matter produced by plants in an ecosystem?
gross production
net production
feed conversion ratio
realised niche
the total dry mass of organic matter in organisms or ecosystems.
biomass
zone of intolerance
biome
trophic level
