7C Populations in Ecosystems

Question 1

Define a population

Answer 1

a group of individuals of the same species in the same place

Question 2

What is a community?

Answer 2

a group of populations that exist in the same area

Question 3

Define an ecosystem

Answer 3

all the non-living and living components of a community

Question 4

What is a biological niche?

Answer 4

the part of an ecosystem in which a species lives

Question 5

What is the carrying capacity?

Answer 5

the maximum capacity of an ecosystem
if a population goes above this, it’ll crash due to lack of resources back down to the carrying capacity

Question 6

What are the two types of competition?

Answer 6

interspecific - between different species
intraspecific - within the same species

Question 7

describe the predator prey cycle

Answer 7

The population of predators depends on prey
When prey increases, predators have more food so their numbers increase,
this means prey population decreases so there is less food availability so the predator population decreases
Less predation of pry occurs so prey population increases, starting the cycle again

Question 8

Name the stages of succession

Answer 8

Pioneer species / primary succession
secondary succession
climax community