Unit 4

Question 1

what type of succession begins in an area where an ecosystem has been disturbed, removed, or destroyed, that contains soil or bottom sediment

Answer 1

Secondary

Question 2

Which of the following is true of specialist species?

Answer 2

They can tolerate a narrow range of conditions

Question 3

A volcano erupts and creates a mountain range that splits a population of rabbits into several smaller, separate populations. After many generations, they are determined to be different species. This is an example of

Answer 3

Geographic isolation

Question 4

The role a species plays in its ecosystem is it’s

Answer 4

Niche

Question 5

The entire population of cheetahs evolved from a very small group of thousands of years ago. This population lacks which type of diversity

Answer 5

Genetic Diversity

Question 6

the higher the species richness, the….

Answer 6

the higher the species richness, the greater the sustainability

Question 7

Kelp forests play key roles in marine ecosystems, in part by supporting important biodiversity. Because of the decline of the sea otter population, these kelp forest are threatened by

Answer 7

Sea urchins

Question 8

The American crow is a large passerine bird of the family Corvidae and is a common bird found throughout much of North America. It is most likely to be a

Answer 8

generalist

Question 9

A square meter of tropical rainforest may contain hundreds of different species while the same area in a may only contain ten different species. This describes the ___ of the biomes

Answer 9

species richness

Question 10

The earth’s biodiversity is determined by the balance between

Answer 10

Speciation and extinction

Question 11

Whitetail deer are endemic to central Texas. The extinction of the whitetail deer would affect numerous predators that depend on it as a food source as well as the many producers it consumes. Which of the following apply to the whitetail derry in central Texas

Answer 11

Keystone species and Native Species

Question 12

The variety in the genetic makeup of individuals in a population is known as

Answer 12

Genetic variability

Question 13

Each population in an ecosystem has a __ to variations in it’s physical and chemical environment

Answer 13

Range of tolerance

Question 14

For natural selection to occur, an adaptive trait___

Answer 14

Must be heritable

Question 15

Using the principles of island biogeography, which of the following characteristics of a nature reserve would result in the highest biodiversity?

Answer 15

Larger size, closer to a wilderness area of the same biome

Question 16

The process in which individuals with certain traits are more likely to survive and reproduce under a particular set of environmental conditions than are those without the trait is called

Answer 16

Natural selection

Question 17

The ability of an ecosystem to survive moderate disturbances is termed

Answer 17

persistence

Question 18

Lichens are mutualistic relationships between fungi and algae that are very sensitive to air pollutants. Minimum levels of air pollutants can destroy a community of lichens. Lichens are serving as ___ species in this scenario.

Answer 18

Indicator

Question 19

Biological evolution by natural selection involves
Changes in the gene frequencies of a population
Changes in the frequency of some trait in a population
Increased productive fitness

Answer 19

All Changes in the gene frequencies of a population
Changes in the frequency of some trait in a population
Increased productive fitness

Question 20

The loss of a ____ species can lead to population crashes and extinctions of other species in a community that depends on them for certain ecosystem services

Answer 20

Keystone species

Question 21

Which of the following represents the optimum range of tolerance for this species of fish

Answer 21

C

Question 22

The diagram is an example, or model of

Answer 22

Species richness

Question 23

All of the following could be reasons this species would not survive in zones A and E except

Answer 23

Salinity

Question 24

FRQ What is one benefit of high biodiversity

Answer 24

healthy, surviving ecosystems, which provides us with food and clean air.

Question 25

FRQ Characteristics of ecosystems with high biodiversity

Answer 25

wide variety of species, species richness and evens,
bigger food webs

Question 26

FRQ 2 Human impacts that will reduce biodiversity and how

Answer 26

• overhunting and fishing which kills species sometimes keystone species
• Using the land for construction- kills habitats

Question 27

FRQ Something natural that affects biodiversity

Answer 27

Wildfires that kill habitats and species

Question 28

FRQ Provide one explanation for why diseases seldom causes extinction

Answer 28

When species have a high genetic diversity they are able to adapt to diseases and survive then produce more offspring so the disease doesn’t affect them

Question 29

FRQ Describe two threats (other than WNS) to the survival of the bat species if the total number of bats becomes very small

Answer 29

Competition with other animals with the same job
Hard to reproduce or find other animals to reproduce with since the population is so small

Question 30

FRQ Bats are found in ecosystems around the world. Describe two ways in which other organisms in an ecosystem could be affected by a decline in a bat population

Answer 30

Increase in the food the bats ate
Decrease in competition for similar niches

Question 31

FRQ The eastern deciduous forest, in which the little brown bats live, is an important ecosystem. Identify two ecosystems services that forests provide and explain how they benefit human society

Answer 31

Forests provide many resources such as building material and food
Forests also have high biodiversity which helps supports healthy environments that provide oxygen food, and medicine.

Question 32

FRQ Provide a likely reason for the increase in emerging infectious diseases affecting human populations. Include an explanation for the reason you provided

Answer 32

traveling , spreads diseases if obtained from the country you came from
Climate change- helps bacteria spread and survive in places that they used to not be able to. When it was too cold or too hot and now the weather has changed.