3.1 ecosystems

Question 1

what is a species

Answer 1

a group of similar organisms that are able to interbreed and produce fertile offspring

Question 2

biodiversity

Answer 2

the total number of different species living in a particular area

Question 3

population

Answer 3

the number of one species present in a area

Question 4

producer

Answer 4

an organism (green plant) that carries photosynthesis to make its own food using light energy from sun

Question 5

consumer

Answer 5

an organism that has to eat other organism in order to gain energy

Question 6

herbivore

Answer 6

an consumer that only eats plants/producers to gain energy

Question 7

carnivore

Answer 7

a consumer that eats animals to gain energy

Question 8

omnivore

Answer 8

a consumer that eats plant and animals to gain energy

Question 9

predator

Answer 9

an animal hunts another animal for food

Question 10

prey

Answer 10

an animal that gets hunted for food

Question 11

food chain

Answer 11

simple flow diagram that shows energy transfer between series of organisms that depend on the next as a source of food starting with producer and ending with top predator

Question 12

food web

Answer 12

a complex diagram showing energy transfers between organisms in a habitat

Question 13

ecosystem

Answer 13

made up of all the organisms living in a particular habitat and all non living components with which the organisms interact

Question 14

main parts of an ecosystem

Answer 14

all organisms living in a particular habits eg community
non living components that which the organisms interact eg soil type

Question 15

community

Answer 15

all living organisms present in a particular habitat area

Question 16

habitat

Answer 16

a place where organisms lives

Question 17

food chain represents

Answer 17

direction of energy transfer flow between organisms in food chain food food web the arrow always points in direction of organisms that is gaining energy

Question 18

niche

Answer 18

the role an organism plays within its community

Question 19

niche of an organism

Answer 19

the resources that it requires in its ecosystem eeg light
it’s interaction with other organisms in community eg competition
the conditions it can tolerate eg temp

Question 20

interdependence of organisms within food web

Answer 20

every organism within food web is linked to every other organism either directly or indirectly a change to any one population will always have knock on consequences for every other organism within food web

Question 21

competition

Answer 21

competition is a battle between organisms requiring the same recourses
competition occurs when recourses are in short supply

Question 22

two main types of conp

Answer 22

intra specefic - this is organism of the same species for all the recourses they require

inter specefic - this is different organisms belowong to two different species for one or a few of the same recourses they require

Question 23

how is intraspecefic more intense than inter

Answer 23

more intense as it is a competition between members of same species who have exactly same requirements for all recourses that they need