19.1 Populations and ecosystems

Question 1

ecology

Answer 1

study of inter-relationships between organisms and their environment(biotic and abiotic)

Question 2

ecosystems

Answer 2

dynamic systems made up of community and abiotic factors

Question 3

2 major processed in ecosystem

Answer 3

1. flow of energy through system
2. the cycling of elements within system

Question 4

population

Answer 4

group of individuals of one species that occupy same habit at same time are are able to interbreed

Question 5

carrying capacity of ecosystem

Answer 5

certain size of population an ecosystem can support

Question 6

community

Answer 6

all populations of different species living and interacting in particular place at the same time

Question 7

microhabitat

Answer 7

smaller units within a habitat that have their own microclimate

Question 8

ecological niche

Answer 8

describes how an organism fits into the environment- where it lives and what it does

includes biotic and abiotic conditions to which it is adapted in order to survive, reproduce and maintain viable popn

Question 9

competitive exclusion principle

Answer 9

species may appear similair but never occupy exactly the same niche

Question 10

population size affected by

Answer 10

abiotic factors

interactions between organisms(intraspecific or interspecific competition and predation)