APES - Unit 4 Quiz with 100% correct answers

APES - Unit 4 Quizpopulation - correct answer composed of all individuals that belong to the same species and live in a given area at a particular time; 5 characteristics: Size, density, distribution, sex-ratio, and age structure. community - correct answer incorporates all of the populations of organisms within a given area; how species interact within; all biotic and abiotic components in a location population ecology - correct answer the study of factors that cause populations to increase or decrease; Ex. ash borer insect being studied because they are killing ash trees population size - correct answer the total number of individuals within a defined area at a given time; population density - correct answer the number of individuals per unit area (or volume for aquatic organisms) at a given time; help science estimate if species is rare/abundant- wild life managers for hunting population distriution - correct answer a description of how individuals are distributed with respect to one another; random=trees in forrest; uniform distribution=evenly spread like terrestrial animal; clumped: schooling fish, groups protect them from predators sex ratio - correct answer the ratio of males to females; usually close to 50/50; fig wasps= 20x more females, helps estimate # of offspring to produce in next generation age structure - correct answer a description of how many individuals fit into particular age categories; predict how rapidly a pop can grow density-dependent factors - correct answer influences an individual's probability of survival and reproduction in a manner that DEPENDS on the SIZE of the population