community and competition

Question 1

habitat

Answer 1

place where an organism lives

Question 2

population

Answer 2

all the organisms of a particular species that live in a habitat

Question 3

community

Answer 3

all the populations of different species that live together in a habitat

Question 4

biotic factors

Answer 4

living factors of the environment that affect other organisms or shape the ecosystem in some way
eg. availability of food
predators
new diseases
competition

Question 5

abiotic factors

Answer 5

non living factors, generally physical/ chemical parts of the environment
eg. light intensity
temperature
soil pH / mineral content
CO2 conc
wind direction/ intensity
moisture levels

Question 6

ecosystem def

Answer 6

the interaction of a community of living organisms with the non living parts of their environment

Question 7

animal competition

Answer 7

territory
food and water
mates for reproduction

Question 8

plant competition

Answer 8

space to grow
light for photosynthesis
water and mineral ions

Question 9

interdependence

Answer 9

all species depend on other species in some way (food web)

Question 10

competition def

Answer 10

interaction between organisms or species in which they both try to use the same limited resource

Question 11

adaptation

Answer 11

structural- physical features we see
behavioural- how an organism acts
functional- processes going on within an organism

Question 12

extremophiles

Answer 12

organisms adapted to live in extreme conditions
eg, high/low temp, high pressure (deep sea), high salt conc

Question 13

food chain

Answer 13

producer- photosynthetic organism
primary consumer- eats producer
secondary consumer- eats PC
tertiary consumer- eats SC

Question 14

energy in food chain

Answer 14

mostly lost as it goes up food chain, little conserved

Question 15

pred prey cycles

Answer 15

show relat between pred and prey
pred always lags behind prey (eg, pop increase)
described as being out of phase