examen Nov

Question 1

an individual living thing

Answer 1

organism

Question 2

a group of the same species that lives in one area

Answer 2

population

Question 3

the group of different species that live together in an area

Answer 3

community

Question 4

includes all the organisms as well as the climate, soil, water, rocks and other nonliving things in a given area

Answer 4

ecosystem

Question 5

is a major o regional or global community of organisms characterized by climate and plant communities that thrive there.

Answer 5

biome

Question 6

is the act of carefully watching something over time

Answer 6

observation

Question 7

how can be done observations?

Answer 7

by visual surveys

Question 8

for easy to spot species employ binoculars or scopes.

Answer 8

Direct surveys

Question 9

are used for species that are difficult to track and include using other signs of their presence

Answer 9

Indirect surveys

Question 10

were are performed experiments

Answer 10

in the lab or in the field

Question 11

give researchers more control but are not reflective of the natural interactions of nature

Answer 11

lab experiments

Question 12

give a more accurate picture of natural interactions but may not determine actual cause and effect

Answer 12

field experiments

Question 13

can be used to describe and model nature and allow scientists to learn about organisms and ecosystems in ways that could not be possible in an actual field lab or setting

Answer 13

Computer and mathematical Models

Question 14

What includes every ecosystem

Answer 14

living and nonliving factors

Question 15

what are biotic factors?

Answer 15

living things

Question 16

what are abiotic factors

Answer 16

nonliving things

Question 17

What is biodiversity

Answer 17

is the assortment or variety of living things in an ecosystem

Question 18

what have more biodiversity than other part of the world

Answer 18

Rain forests

Question 19

what is a keystone specie

Answer 19

an species that usually have a large effect in the ecosystem and form and maintain a complex web of life

Question 20

what is a food chain or a food web

Answer 20

is a model of how energy flows in an ecosystem

Question 21

links species by their feeding relationships

Answer 21

food chain

Question 22

the Study of the relationships among an organisms and their enviroment

Answer 22

Ecology

Question 23

an organism that eats only plants

Answer 23

Hervivor

Question 24

an organism that eat only animals

Answer 24

Carnivores

Question 25

organisms that eat dead organic matter

Answer 25

detritivores

Question 26

are detritivores that brake down matter into simpler compounds

Answer 26

decomposers

Question 27

are consumers that primarily eat one specific organism ora very small variety of organisms

Answer 27

specialists

Question 28

are consumers that have a varying diet

Answer 28

generalists

Question 29

are nourishment levels in a food chain?

Answer 29

Trophic levels (primary consumers, seconsary consumers, etc.)

Question 30

emphasizes complex feeding relationships in an ecosystem

Answer 30

a food web

Question 31

model the distribution of energy and matter in an ecosystem

Answer 31

pyramid models

Question 32

how many percent of energy is lost between level and level of a pyramid mosdel

Answer 32

90%

Question 33

is the measure of total dry mass of organisms in a given area

Answer 33

biomass

Question 34

what does every organism have?

Answer 34

habitat and niche

Question 35

all aspects of the area in where an organism live?

Answer 35

habitat

Question 36

what includes the habitat

Answer 36

biotic and abiotic factors

Question 37

all the factors that an organism needs to survive, stay healthy and reproduce.

Answer 37

niche

Question 38

what does niche includes

Answer 38

food, abiotic conditions, behavior, shelter, energy, oxygen | , etc.

Question 39

when does competition occurs

Answer 39

when 2 or more species use resources the same way

Question 40

when does competitive exclusion keeps?

Answer 40

two species from occupying the same niche

Question 41

what are the 3 outcomes of competitive exclusion

Answer 41

One species is better situed to the niche and will either be pushed out or become extinct. The niche will be divided The 2 species will further diverge

Question 42

What are Ecological equivalents

Answer 42

they are species that occupy similar niches but live in different geographical regions

Question 43

how does organisms interact?

Answer 43

as individuals or as populations

Question 44

When does predation occurs

Answer 44

when one organism captures and eats another

Question 45

What are the three types of symbiotic relationships

Answer 45

Mutualism, Commensalism, and parasitism

Question 46

Explain mutualism

Answer 46

Both organisms are Benefit

Question 47

explain commensalism

Answer 47

one organism is benefit and the other is not affected

Question 48

explain parasitism

Answer 48

one organism is benefit and the other harmed

Question 49

how does parasitism meet their needs

Answer 49

as ectoparasites or endoparasites