Must Knows

Ecology Unit Must Knows
AP Bio – Erlenbeck
Chapters covered:
51, 52, 53, 54, 55, 56
Must Knows:
Ch. 51
How behaviors are the result of natural selection.
How innate and learned behaviors increase survival and
reproductive fitness.
How organisms use communication to increase fitness.
The role of altruism and inclusive fitness in kin selection
Ch. 53
How density, dispersion, and demographics can describe
a population.
The differences between exponential and logistic models
of population growth.
How density-dependent and density-independent factors
can control population growth.
How a change in matter or energy will affect the
population or community.
The effect of age distributions and fecundity on human
populations as presented in age-structure pyramids.
Ch. 55
How energy flows through the ecosystem by
understanding the terms in bold that relate to food chains
and food webs. The difference between gross primary
productivity and net primary productivity.
The carbon and nitrogen biogeochemical cycles.
How biogeochemical cycles impact individual organisms
and/or populations and ecosystems.
Ch. 52
The role of abiotic factors in the formation of biomes
How biotic and abiotic factors affect the distribution of
How changes in these factors may alter ecosystems.
Ch. 54
The difference between a fundamental niche and a
realized niche.
The role of competitive exclusion in interspecific
The symbiotic relationships of parasitism, mutualism, and
The impact of keystone species on community structure.
The difference between primary and secondary
Ch. 56
The value of biodiversity and the major human threats to
How human actions are changing the Earth.
How to predict consequences on both local and global
ecosystems of specific human activities.
Tentative Test Date:
November 12th, 2014
AP Biology 2014-15