bio 8-ecology

Question 1

what is the name of the organisms that can survive severe conditions?

Answer 1

extremophiles

Question 2

what is the definition of an ecosystem?

Answer 2

it is the interaction of a community of living and non-living organisms in an environment

Question 3

what is the definition of interdependence?

Answer 3

it is the concept that organisms in an ecosystem rely on each for survival, growth and reproduction

example:the flower relies on the bee for pollination whereas the bee relies on the flower for nectar

Question 4

what is a habitat?

Answer 4

it is the environment in which the animal lives

Question 5

what is a population?

Answer 5

it is the total number of organisms of the same species living in the same geographical area

Question 6

what is a community?

Answer 6

it is the population of all the different species that live in the same habitat

Question 7

what do plants compete for?

Answer 7

light
water
mineral ions
space

Question 8

what do animals compete for?

Answer 8

food
water
mating partners
terrority

Question 9

biotic factors:

Answer 9

living parts such as
availability of food
new predators arriving
new pathogen
competition between species

Question 10

abiotic factors:

Answer 10

non-living parts such as

Question 11

what evidence is used to study species that have become extinct

Answer 11

fossils
DNA
remains of organisms

Question 12

required practical 9-sampling

Answer 12

mark out two areas

Question 13

consequences of increasing numbers of cows being farmed

Answer 13

fewer plants due to more trampling and due to more being eaten by the crows

less photosynthesis so more carbon dioxide into the atmosphere

cows will release carbon dioxide from respiration

cows release methane-deforestation to produce farmland

Question 14

environmental implications

Answer 14

carbon dioxide and methane are greenhouse gases-global warming may be greater

Question 15

processes of the water cycle

Answer 15

1.evaporation
2.condensation
3.precipitation
4.draining-drainage
5.transpiration

Question 16

what is the carbon cycle process?

Answer 16

carbon dioxide is taken in through the stomata-used in photosynthesis
to make glucose which is used to make proteins and is stored as starch

plants are eaten by animals-which use the carbon compounds to make other carbon compounds

when plants and animals die they are decomposed by microorganisms-which use the carbon compounds to make other carbon compounds

plants respire which releases carbon dioxide into the atmosphere