population in ecosystems

Question 1

What is ecology?

Answer 1

-ecology is the study of inter relationships between organisms and their environment including both avionic and biotic factors

Question 2

What is an ecosystem?

Answer 2

-ecosystems are dynamic systems made up of a community and all the non-living factors of its environment which vary ink size

Question 3

What are the major processes that occur in an ecosystem?

Answer 3

• the flow of energy through an ecosystem

- the cycling of elements within an ecosystem

Question 4

What is an example of an ecosystem?

Answer 4

• a pond or a lake has its own community of plants to collect the necessary sunlight energy to supply the organisms within it
• nutrients such as nitrate ions are recycled within
• there is little loss or gain between it and other ecosystems

Question 5

What is a population?

Answer 5

-a population is a group of individuals of one species that occupy the same habitat at the same time and are able to interbreed

Question 6

What is carrying capacity?

Answer 6

-the size of population an ecosystem can support

Question 7

Which factors affect the size of a population?

Answer 7

• abiotic factors

- biotic factors

Question 8

What is a community?

Answer 8

-community is defined as all the populations of different species living together in a specific place at one time

Question 9

What is a habitat?

Answer 9

-a habitat is the place where an organism normally lives and is characterised by physical conditions and other types of organisms present

Question 10

What is an example of a habitat?

Answer 10

-a leaf canopy in oak woodland is the habitat of blue tits

Question 11

what is a microhabitat?

Answer 11

-within each habit there are smaller units each with their own microclimate

Question 12

What is a niche?

Answer 12

-a niche describes how an organism fits into its environment, with reference to where it lives and its activities including all the biotic and Asiatic conditions it is adapted to in order to survive, reproduce and maintain a viable population

Question 13

What is an example of a niche?

Answer 13

-some species may appear similar but there nesting habitats of other behaviours will be different or they have different levels of tolerance to environmental factors such as a shortage of oxygen or nitrates

Question 14

What is the competitive exclusion principle?

Answer 14

-no two species will occupy exactly the same niche