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Bio 1104 Test 1 Verified Study Questions And Answers With Verified Solutions
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Bio 1104 Test 1 Verified Study Questions And Answers With Verified Solutions
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Bio 1104 Test 1 Verified Study Questions And AnswersWith Verified Solutions
population ANS consist of all members of a particular species that live w/n a ecosystem
community ANS group of interacting populations
biosphere ANS Consists of all life on Earth and all parts of the Earth in which life exists, including land, water,
and the atmosphere.
ecosystem ANS A biological community of interacting organisms and their physical environment.
ecology ANS Scientific study of interactions among organisms and between organisms and their environment
natural increase ANS difference between birth & death, if death exceeds births its negative
net migration ANS difference between immigration and emigration
carrying capacity (k) ANS max population size that can be sustained by a ecosystem
growth rate ANS its the percentage change in the pop. size per unit time. its determined by birth rate - death
rate
biotic potential ANS determines max rate a pop. can grow
environmental resistance ANS limits a populations growth, s curve chart has density independent and
independent factors
density independent ANS dosent depend on pop. size. weather, natural disasters, seasonal cycles and human
activities
, denisty dependent ANS depends on pop size. competition, predation, parasitism and disease
type of growth: exponential ANS even larger nu,her is added to the pop. pop goes against time curve. boom
bust cycle. grows rapidly the decrease, happen when birth exceeds death
type of growth: logistic ANS happens when new pop stabilize as a result of environmental resistance. pop
increases to max number then stabilize. s curve
humans have experienced what kind of growth ANS exponential j curve
replacement level fertility ANS when parents have enough kids to replace them 2.1 kid per parent
demographic change for humans ANS pre-times birth and death was high pop size was low
post-times birth and death are low pop size is stable
biotic ANS living. bacteria, fungi, plants and animals
abiotic ANS non living. climate, light,temp and availability of water
nutrients ANS atoms and molecules that organisms obtain from their environment
trophic levels ANS each category of a organism
producers ANS autotrophs make own food 1st level
consumers ANS heterotrophs can't photosynthesize get things needed from other organisms
decomposers ANS fungi and bacteria
detritivores ANS debri eaters nematodes and earth worms
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