ecosystems

Question 1

what are abiotic factors?

Answer 1

non living factors e.g. temperate, water availability, salinity, light availability, CO2 concentration

Question 2

what are biotic factors?

Answer 2

living factors - food, competition, predator/prey, symbiosis, habitat

Question 3

what is a keystone species ?

Answer 3

an organism that has a disproportionately larger influence on the environment

Question 4

what are the three types of keystone species?

Answer 4

predators, ecosystem engineer, mutualists

Question 5

what is a predator keystone?

Answer 5

controls the populations of prey species

Question 6

what is an ecosystem engineer?

Answer 6

an organism that creates, changes or destroys a habitat

Question 7

what is a mutualist?

Answer 7

bees

Question 8

what is symbiosis?

Answer 8

a relationship between two organisms in an ecosystem

Question 9

what is parasitism?

Answer 9

host organism suffers (not dying) and the parasite benefits ( + - )

Question 10

what is mutualism?

Answer 10

when both organisms benefit ( + + )

Question 11

what is commensalism?

Answer 11

when one organism benefits and the other isn’t effected ( + • )

Question 12

what is a psychological adaption?

Answer 12

involuntary bodily process (heart rate)

Question 13

what is a behavioural adaptation?

Answer 13

something an organism does (mating, cooling behaviours, nocturnal)

Question 14

what is a structural adaptation?

Answer 14

part of an organisms’ body (size, shape, structure)

Question 15

what is an adaptation?

Answer 15

a feature that an organism possesses that enhances survival