Grade 12 Ieb Population Ecology Exam Questions (54 Terms) With Verified Definitions Updated 2024

Total world ecological footprint {Ans: 2,7 global hectares per person. World average bio capacity is 2,1 global hectares per person. Ecological deficit of 0,6 global hectares per person.}Mortality {Ans: death rate}LDCs {Ans: •rapid growth rate •lower standard of living}Food web {Ans: An interconnected set of all the food chains in an ecosystem.}Succession stages {Ans: 1) pioneer 2) intermediate 3) climax - endpoint of succession}Unstable population {Ans: Pop far exceeds cc Habitat: deteriorating rapidly, low cc, not being able to support pop, decrease, extinct}Social organisation {Ans: Structure of relationships within a group. Improves the survival and reproductive success of an individual.}Ecological footprint {Ans: A measure of human demand on the earth's ecosystems. Represents amount of biologically productive land and sea area necessary to supply the resources a human population consumed, and to assimilate the waste generated.}Direct method {Ans: Counting every single individual in pop. CENSUS. Organisms=large. Area=not too large. Individuals=slow, stationary, stay in fixed position. Area too large=aerial pics, helicopters.}Competitive exclusion {Ans: One of the two competing species, more successful than other. Successful species survives and other disappears, extinction, NB role in evolution.}Quadrat Method of Estimating Populations {Ans: Counting no.