ecology test

Question 1

made up of all the living and nonliving organisms in an environment

Answer 1

ecosystem

Question 2

a place where an organism lives that provides the type of resources needed for survival

Answer 2

habitat

Question 3

all the populations of different species living in an ecosystem

Answer 3

community

Question 4

all the populations that belong to the same species living in a community

Answer 4

population

Question 5

the variety of life in an ecosystem

Answer 5

biodiversity

Question 6

when an organism moves into a population

Answer 6

immigration

Question 7

when an organism moves out of a population

Answer 7

emigration

Question 8

largest number of individuals that an ecosystem can support overtime

Answer 8

carrying capacity

Question 9

a species is excluded from an environment due to conflict between another organism

Answer 9

competitive exclusion

Question 10

unlimited resources

Answer 10

biotic potential

Question 11

an organism that can produce its own energy rich molecules

Answer 11

producer

Question 12

the study of interactions between organisms

Answer 12

ecology

Question 13

an organism who can not produce its own energy rich molecules

Answer 13

consumer

Question 14

an organism that breaks down organic matter

Answer 14

decomposer

Question 15

an organism who only eats plants

Answer 15

herbivore

Question 16

an organism who only eats meat

Answer 16

carnivore

Question 17

an organism who eats both plants and meat

Answer 17

omnivore

Question 18

give examples of biotic factors

Answer 18

plants
animals
bacteria

Question 19

give examples of abiotic factors

Answer 19

rocks

soil

Question 20

What happens when

           birth rate > death rate

Answer 20

population increases

Question 21

What happens when

      birth rate

Answer 21

population decreases

Question 22

what happens when

                  birth rate equals death rate

Answer 22

population stays the same

Question 23

what are two types of graphs that can show population

Answer 23

exponential

logistic

Question 24

what type of growth does an exponential graph show

Answer 24

quick

Question 25

what type of growth does a logistic graph show

Answer 25

gradual

Question 26

what are two methods to counting a population over a large area

Answer 26

trap-mark-release

large sample counts

Question 27

name some common limiting factors

Answer 27

predators
lack of resources
human activity
temperature change

Question 28

what are two possible outcomes of conflict between organisms i the same community

Answer 28

on can be exiled

they can divide the resources

Question 29

what does an energy pyramid show

Answer 29

the loss of energy from each trophic level

Question 30

what is predation?

Answer 30

the act of organism killing another for food

Question 31

describe coevolution

Answer 31

back and forth adjustment

Question 32

what is parasitism?

Answer 32

a relationship between organisms in which one benefits while the other is harmed

Question 33

give an example of parasitism

Answer 33

flea on a dog

Question 34

what are the two types of symbiosis

Answer 34

mutualism

commensalism

Question 35

describe mutualism

Answer 35

both organisms benefit

Question 36

describe commensalism

Answer 36

one organism benefits while the other is not affected

Question 37

give an example of a simple food chain and describe how much energy is gained in each trophic level

Answer 37

grass ——– caterpillar ——– bird

100% ——– 10% —————–1%

Question 38

describe coevolution between plants and animals

Answer 38

animal eats the plant
animal dies
animal decomposes giving nutrients back to the plants

Question 39

what makes up our biosphere?

Answer 39

top portion of earth’s crust
all the water on earth’s surface
the atmosphere