Old Test

Question 1

T or F. Temperature increases due to global climate change have been greatest closest to the poles

Answer 1

true

Question 2

The biological species concept requires sexual reproduction. t or f

Answer 2

true

Question 3

True or false. natural selection prepares organisms for future changes in the environment

Answer 3

false

Question 4

t or f phylogenetic trees are fossilized trees

Answer 4

false

Question 5

t or f in the food chaing grass to antelop to human to lion the antelope is a herbivore and producer

Answer 5

false

Question 6

True or false natural selection works on variation alreay present in population

Answer 6

true

Question 7

unlike other primates, human populations are parasitized by only one lousy louse species

Answer 7

false

Question 8

organisms evolve structures that they need true or false

Answer 8

false

Question 9

once carbon enters the plant it can be turned into energy for plant growth t or f

Answer 9

false

Question 10

t or f once carbon enters the plant it can be consumed by an insect feeding on the plant and become part of the insect’s body

Answer 10

true

Question 11

t or f once carbon enters a plant it can exit as co2

Answer 11

true

Question 12

what can create new alleles

Answer 12

mutation

Question 13

speciation, or the formation of new species is

Answer 13

responsible for the diversity of life

Question 14

in most developing countries

Answer 14

birth rates are much higher than death rates so the population is growing rapidly

Question 15

the rate at which an ecosystems producers convert solar energy to chemical energy stored in biomass is caled

Answer 15

primary productivity

Question 16

what is a representation of homologous structures

Answer 16

wing of a bat and flipper of a whale

Question 17

what does evolutionary fitness measure

Answer 17

relative reproductive success

Question 18

what is a main idea of darwin that he advanced in his works

Answer 18

species change over time, the earth is appx 6000 yrs old and unchanging

Question 19

mutations arise by….

Answer 19

chance due to random changes in nucleotide sequences

Question 20

in oceans global warming has

Answer 20

made the water more acidic

Question 21

in what way does energy flow differ from chemical cycling

Answer 21

energy flow is unidirectional, chemical elements can be recycled

Question 22

accodring to the logistic growth model, what happens to a population when the sie of the population reaches carrying capacity

Answer 22

growth rate is zero

Question 23

If current trends in global warming continue for the next 50 years where will the greates effects of global warming likely be felt

Answer 23

greenland

Question 24

what type of consumer is a white tailed deer

Answer 24

herbivore

Question 25

natural selection can be defined as

Answer 25

a process in which organisms with certain inherited traits are more likely to survive and reprodue than individuals with other traits

Question 26

the total collection of alleles in a population at any one time make up that population's

Answer 26

gene pool

Question 27

genetic drift is the result of

Answer 27

chance

Question 28

what level of ecology is concerned with the biotic and abiotic aspects of an environment

Answer 28

ecosystem

Question 29

which nutrients often limit the distribution and abundance of photosyntheci organisms

Answer 29

nitrogen and phosphorus

Question 30

what is a factor that operates in a density dependent manner

Answer 30

food supply

Question 31

co2 in the atmosphere is absorbed by ___ and converted into biomass

Answer 31

photosynthetic organisms

Question 32

the effect of deforestation has

Answer 32

increased the amount of carbon dioxide in the atmosphere

Question 33

two populations that have been seperated by a river are most likely to become seperate species if

Answer 33

genes controlling molecules on the surface of the sperm that bind the egg receptors are different in the tow populations

Question 34

____ is a directive process, while ___ is a random process. Both are considered ___ processes.

Answer 34

natural selection, genetic drift, evolutionary

Question 35

speciation, or the formation of new species is

Answer 35

responsible for the diversity of life

Question 36

the greenhouse effect causes an increase in global temperatures this is primarily due to

Answer 36

co2 and other greenhouse gases slowing the escape of heat from earth

Question 37

What is an abiotic reservoir of nitrogen

Answer 37

atmospheric N2

Question 38

microevolution refers to the genetic changes in...

Answer 38

populations of organisms

Question 39

if two animals are able to interbreed but produce sterile hybrids these two animals belong to

Answer 39

different species

Question 40

what type of structures found in two different species suggests divergent evolution

Answer 40

homologous structures

Question 41

fireflies that cannot communicate properly with each other (wrong flash rate) for mating is an example of

Answer 41

behavioral isolation

Question 42

in the oceans global warming has...

Answer 42

made the water more acidic.

Question 43

according to the logistic growth model what happens to a population when the size of the population reaches carrying capacity

Answer 43

growth rate is zero

Question 44

what must occur during a period of geographic isolation in order for two or more sibling species to remain genetically distinct following their geographic reunion in the same home range

Answer 44

reproductive isolation

Question 45

hybridization, such as mules and ligers is an example of...

Answer 45

postzygotic isolation

Question 46

tropical rainforests contain ____ percent of all life forms on earth

Answer 46

40-50%

Question 47

recovery from extinction takes about

Answer 47

10 million years

Question 48

what does evolutionary fitness measure

Answer 48

relative reproductive success

Question 49

What important processes drive the carbon cycle

Answer 49

photosynthesis and respiration

Question 50

in a food web an eagle is most likely to be a ___ consumer

Answer 50

tertiary or quaternary

Question 51

the affect of deforestation has been to ____

Answer 51

increase the amount of carbon dioxide in the atmosphere

Question 52

the energy for nearly every organism in almost every ecosystem comes from...

Answer 52

the sun

Question 53

natural selection can be defined as

Answer 53

a process in which organisms with certain inherited traits are more likely to survive and reproduce than individuals with other traits.

Question 54

a reproductive barrier that prevents a species from mating is an example of

Answer 54

a prezygotic barrier