Question 1

________ is a process in which rubber is treated with sulfur and heat to stabilize its elastic properties.

Accepted Answer

The answer of ________ is a process in which rubber...

Question 2

Consider a simplified ecosystem: grass->mice->weasels->.According to the pyramid of biomass concept,if you were to determine the collective dry weight of all the organisms at each trophic level,the weasels would have the largest biomass and the grasses would have the smallest.

Accepted Answer

A) True 
 B)False

Question 3

This biome includes evergreen plants with sclerophyllous leaves.Allelopathy is common and plants in this biome are adapted to frequent fires.This biome would be classified as which of the following?

Accepted Answer

A) tundra 
B) chaparral 
C) grassland 
D) desert 
E) tropical rain forest

Question 4

Turner decided to not mow his lawn for one year and see what happened.After one year,he had a yard full of dandelions.This represents an example of which of the following.

Accepted Answer

A) invasive species and competitive exclusion 
B) ecological equivalence 
C) resource partitioning 
D) biological magnification 
E) occupying a specialized niche

Question 5

All of the following will result from global warming except one.Choose the exception.

Accepted Answer

A) Climates will become drier. 
B) Pest and pathogen populations will increase. 
C) Oceans will become more alkaline. 
D) Coastal areas will be inundated. 
E) Phenologies will be disrupted.

Question 6

The soils of this biome are nutrient and organic matter poor and subject to wind erosion.This biome is which of the following?

Accepted Answer

A) tundra 
B) chaparral 
C) grassland 
D) desert 
E) tropical rain forest

Question 7

Which of the following statements is not correct?

Accepted Answer

A) Under natural conditions,no two species may occupy the same niche indefinitely. 
B) Competitive exclusion has been amply demonstrated through experimentation. 
C) The water hyacinth is a major problem in southern waterways,where it crowds out native species. 
D) Dandelions,coyotes,and humans are examples of specialists. 
E) Crucial to the functioning of an ecosystem is the relationship of organisms in a food chain.

Question 8

The savanna is a temperate forest biome characterized by trees that annually shed their leaves in autumn.

Accepted Answer

A) True 
 B)False

Question 9

The retreat of a large glacier scoured the earth removing all vegetation and soil.The first plants to recolonize the devastated area were mosses.The type of succession represented in this scenario is ________ and moss is considered a ________ species.

Accepted Answer

A) primary;pioneer 
B) primary;secondary 
C) secondary;pioneer 
D) secondary;primary 
E) primary;successional

Question 10

A ________ ________ is a linear sequence indicating the nutritional relationships between organisms in a community.

Accepted Answer

The answer of A ________ ________ is a linear sequence...

Question 11

A biome characterized by permafrost is which of the following?

Accepted Answer

A) tundra 
B) chaparral 
C) boreal forest 
D) desert 
E) tropical rain forest

Question 12

The savanna is a type of ________.

Accepted Answer

A) tundra 
B) chaparral 
C) grassland 
D) desert 
E) tropical rain forest

Question 13

Flying squirrels eat mushrooms that decompose the remains of fir trees - the dominant plants in the forest.Spotted owls eat the flying squirrels.In turn,crows eat the eggs of spotted owls.The flying squirrels are which of the following?

Accepted Answer

A) primary producers 
B) primary consumers 
C) secondary consumers 
D) tertiary consumers 
E) none of these

Question 14

In the shelterwood method of tree harvesting,some mature trees are not harvested to regenerate the forest naturally.

Accepted Answer

A) True 
 B)False

Question 15

Clear-cutting is the method of tree harvesting that is least disruptive to a forest.

Accepted Answer

A) True 
 B)False

Question 16

A ________ community is the last successional stage in both primary and secondary succession.

Accepted Answer

The answer of A ________ community is the last successional...

Question 17

What two physical factors are most important in determining the type of biome found in a region?

Accepted Answer

A) soil type and annual precipitation 
B) fire and temperature 
C) temperature and precipitation 
D) temperature and topography 
E) insolation and precipitation

Question 18

Flying squirrels eat mushrooms that decompose the remains of fir trees - the dominant plants in the forest.Spotted owls eat the flying squirrels.In turn,crows eat the eggs of spotted owls.The mushrooms are which of the following?

Accepted Answer

A) primary producers. 
B) primary consumers. 
C) secondary consumers. 
D) tertiary consumers. 
E) None of the above is correct.

Question 19

The first organisms to occupy a new successional site are called pioneer species.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following also produces a natural rubber latex similar to that of the rubber tree in the Amazon?

Accepted Answer

A) Parthenium argentatum 
B) Quercus rubra 
C) Pinus pseudostrobus 
D) Juglans nigra 
E) Simmondsia chinensis

Exam 26: Plant Ecology

________ is a process in which rubber is treated with sulfur and heat to stabilize its elastic properties.

Consider a simplified ecosystem: grass->mice->weasels->.According to the pyramid of biomass concept,if you were to determine the collective dry weight of all the organisms at each trophic level,the weasels would have the largest biomass and the grasses would have the smallest.

This biome includes evergreen plants with sclerophyllous leaves.Allelopathy is common and plants in this biome are adapted to frequent fires.This biome would be classified as which of the following?

Turner decided to not mow his lawn for one year and see what happened.After one year,he had a yard full of dandelions.This represents an example of which of the following.

All of the following will result from global warming except one.Choose the exception.

The soils of this biome are nutrient and organic matter poor and subject to wind erosion.This biome is which of the following?

Which of the following statements is not correct?

The savanna is a temperate forest biome characterized by trees that annually shed their leaves in autumn.

The retreat of a large glacier scoured the earth removing all vegetation and soil.The first plants to recolonize the devastated area were mosses.The type of succession represented in this scenario is and moss is considered a species.

A is a linear sequence indicating the nutritional relationships between organisms in a community.

A biome characterized by permafrost is which of the following?

The savanna is a type of ________.

Flying squirrels eat mushrooms that decompose the remains of fir trees - the dominant plants in the forest.Spotted owls eat the flying squirrels.In turn,crows eat the eggs of spotted owls.The flying squirrels are which of the following?

In the shelterwood method of tree harvesting,some mature trees are not harvested to regenerate the forest naturally.

Clear-cutting is the method of tree harvesting that is least disruptive to a forest.

A ________ community is the last successional stage in both primary and secondary succession.

What two physical factors are most important in determining the type of biome found in a region?

Flying squirrels eat mushrooms that decompose the remains of fir trees - the dominant plants in the forest.Spotted owls eat the flying squirrels.In turn,crows eat the eggs of spotted owls.The mushrooms are which of the following?

The first organisms to occupy a new successional site are called pioneer species.

Which of the following also produces a natural rubber latex similar to that of the rubber tree in the Amazon?