ENVIRONMENTAL FINAL - Unit 2

Question 1

Which of the following statements is not true

a) larger islands contain more species than smaller islands
b) larger islands contain more biotic and less biotic factors than smaller islands
c) larger islands are more common than smaller islands and can support more species
d) none of the above

Answer 1

b

Question 2

_________ is the only plant that has evolved to live fully in the ocean

Answer 2

seagrass

Question 3

why does kelp not survive in tropical waters

Answer 3

it cannot take in the nutrients it needs to survive

Question 4

which of the following was an example of an invasive species

Answer 4

brown tree snake

Question 5

t/f upwelling helps stir up nutrients from deep in the oean

Answer 5

t

Question 6

t/f distance between habitats and a source of colonization does not affect species richness

Answer 6

f

Question 7

t/f only select species can disperse long distances

Answer 7

t

Question 8

t/f islands are subject to invasive species because they are primarily generalist species

Answer 8

f

Question 9

biodiversity

Answer 9

the diversity of life forms in an environment
-crucial to population survival

Question 10

4 biodiversity scales

Answer 10

-genetic
-species
-habitat
-ecosystem

Question 11

genetic biodiversity

Answer 11

-measure of the genetic variation in a population
-large populations have higher variations in their populations
(ex: white tailed deer)

-if a large population declines, the genetic diversity declines (causes a population bottleneck)

Question 12

species biodiversity

Answer 12

-measures the number of species in a region or ecosystem

Question 13

habitat biodiversity

Answer 13

measures the variety of habitats in a given ecosystem

specialists: small range
generalists: wide range

Question 14

ecosystem biodiversity

Answer 14

-measures the variety of ecosystems that exist in a given region

Question 15

what are some of the services provided by mangrove trees?

Answer 15

protects coastlines, nurseries or organisms, provides food

Question 16

in certain parts of the world, people are destroying mangroves to make ________. the idea behind this is that they are adding ________ to that part of the coastline by producing a commerciably viable product

Answer 16

shrimp fisheries; economic value

Question 17

how does the value of the undisturbed mangrove swamp compare to that of the shrimp fisheries

Answer 17

3-4x of the value than the shrimp fisheries

Question 18

according to the video on “Human and ecosystem services,” new york city had a major problem with

a) quality of air
b) quality of source water
c) quality of human health
d) all of the above

Answer 18

b

Question 19

____ are places for the recycling and removal of dangerous chemicals from water and for clarifying and cleaning water

Answer 19

wetlands

Question 20

boreal forests are another name for

Answer 20

taiga

Question 21

if you wanted to visit a tropical rainforest, where would you most likely travel?

a) central africa
b) eastern north america
c) western europe

Answer 21

a

Question 22

if you were to travel from the north pole southward toward the equator, what would be the most logical order of biomes you would encounter

Answer 22

tundra, taiga, temperate forest, tropical rainforest

Question 23

which of the following species is considered a specialist species

a) snow leopard
b) white tailed deer
c) skunk

Answer 23

a

Question 24

1 hectare is equal to ____ acres

Answer 24

2.5 acres

Question 25

if a national park contains 312.4 hectares, what is the approximate size in acres?

312.4 hectare x 2.5 acres/1 hectare

Answer 25

781 acres

Question 26

scientists estimate there are approximately __________ species on Earth

Answer 26

10,000,000

Question 27

which biome is the most biodiverse in the world

Answer 27

tropical rainforest

Question 28

what is the key factor when determining if a biome is a desert

Answer 28

precipitation/how dry it is

Question 29

t/f if a species has low genetic diversity, the population will increase when exposed to environmental change and disease

Answer 29

f

Question 30

t/f the loss of several habitats can lead to a loss of generalist species

Answer 30

t

Question 31

t/f species biodiversity is an indicator as to the health of an environment

Answer 31

t

Question 32

t/f species richness is the best indicator when determining if there is a dominant species in a given area

Answer 32

f