ENVS 201 MIDTERM Questions with Correct Answers
HP Chapter 4 Reading Quiz Correct Answer-...
The full range of habitat types in which a species can exist and reproduce without any competition from other species is called its ... Correct Answer-Fundamental Niche
An interaction where both species involved are harmed and population growth rates are reduced is termed _________. Correct Answer-
Competition
What percent of net energy production at one trophic level is passed on to the next level? Correct Answer-10%
When the supply of energy and nutrients influences ecosystem activities at higher trophic levels by affecting the amount of energy that moves up the food chain, the ecosystem is said to be controlled from the ________. Correct Answer-Bottom-Up
Change driven by new external geophysical conditions such as rising average temperatures resulting from global climate change is termed... Correct Answer-Allogenic Succession
This trophic level is responsible for processing organic material and returning nutrients to the ecosystem. Correct Answer-Decomposers An interaction where both species benefit but the relationship may not be essential for either is termed ________. Correct Answer-Mutualism
True or False: Generally speaking, plant and animal biodiversity is uniformly distributed across the planet. Correct Answer-False
The number of individuals of a species that an ecosystem can support before resource limitations reduce survival is called _________. Correct Answer-Carrying capacity
The process by which natural selection drives competing species into different patterns of resource use or different niches, and coexistence is obtained through the differentiation of their realized ecological niches is called ... Correct Answer-Niche Partitioning
A fundamental concept in ecology that refers to the more or less predictable and orderly changes in the composition or structure of an ecological community is termed ... Correct Answer-Succession
Organisms that tend to be small, short-lived, opportunistic, and to grow through irregular boom-and-bust population cycles are termed _________ Correct Answer-r-selected
An abandoned agricultural field transitions back to forest and sun-
tolerant weeds and herbs appear first, followed by dense shrubs like hawthorn and blackberry. After about a decade, birches and other small fast-growing trees move in, sprouting wherever the wind blows their lightweight seeds. In 30 to 40 years, slower-spreading trees like ash, red maple, and oak take root, followed by shade-tolerant trees such as beech and hemlock. What ecological concept does this example illustrate? Correct Answer-Succession
Evolving to appear similar to another successful species or to the environment in order to dupe predators into avoiding the species, or dupe prey into approaching the species is called... Correct Answer-
Mimicry
Change driven by the inhabitants of an ecosystem, such as forests regrowing on abandoned agricultural fields is termed Correct Answer-
Autogenic Succession
An interaction where one species benefits and the other is not affected is termed ___________. Correct Answer-Commensalism
A model that suggests that organisms that are able to move will distribute themselves according to the amount of food available, with higher concentrations of organisms located near higher concentrations of
food is called the... Correct Answer-Ideal Free Distribution Model
Which terrestrial geographic zones tend to have the highest plant and animal biodiversity? Correct Answer-Tropical A species ________ can be thought of as its range in practice, or the range of habitat types form which it is not excluded by competing species Correct Answer-Realized Niche
_________ describes the amount of energy that remains available for plant growth after subtracting the fraction that plants use for respiration. Correct Answer-Net Primary Productivity
Crash; A Tale of 2 Species Quiz Correct Answer-...
A fundamental concept in ecology that refers to the more or less predictable and orderly changes in the composition or structure of an ecological community. Correct Answer-succession
What are the predators of the horseshoe crab? Correct Answer-Sharks and sea turtles
When considering ecosystem functions such as trophic levels in food webs, migrations of various species, and population decline how does a decline in horseshoe crabs affect the larger ecosystem picture, if a decline does at all? Correct Answer-The spawning of the horseshoe crabs is timed with the red knot migration and a decline in horseshoe crabs will negatively affect the red knot population.
How old is the horseshoe crab species? Correct Answer-350 milliion years
HP Chapter 4 Reading Quiz Correct Answer-...
The full range of habitat types in which a species can exist and reproduce without any competition from other species is called its ... Correct Answer-Fundamental Niche
An interaction where both species involved are harmed and population growth rates are reduced is termed _________. Correct Answer-
Competition
What percent of net energy production at one trophic level is passed on to the next level? Correct Answer-10%
When the supply of energy and nutrients influences ecosystem activities at higher trophic levels by affecting the amount of energy that moves up the food chain, the ecosystem is said to be controlled from the ________. Correct Answer-Bottom-Up
Change driven by new external geophysical conditions such as rising average temperatures resulting from global climate change is termed... Correct Answer-Allogenic Succession
This trophic level is responsible for processing organic material and returning nutrients to the ecosystem. Correct Answer-Decomposers An interaction where both species benefit but the relationship may not be essential for either is termed ________. Correct Answer-Mutualism
True or False: Generally speaking, plant and animal biodiversity is uniformly distributed across the planet. Correct Answer-False
The number of individuals of a species that an ecosystem can support before resource limitations reduce survival is called _________. Correct Answer-Carrying capacity
The process by which natural selection drives competing species into different patterns of resource use or different niches, and coexistence is obtained through the differentiation of their realized ecological niches is called ... Correct Answer-Niche Partitioning
A fundamental concept in ecology that refers to the more or less predictable and orderly changes in the composition or structure of an ecological community is termed ... Correct Answer-Succession
Organisms that tend to be small, short-lived, opportunistic, and to grow through irregular boom-and-bust population cycles are termed _________ Correct Answer-r-selected
An abandoned agricultural field transitions back to forest and sun-
tolerant weeds and herbs appear first, followed by dense shrubs like hawthorn and blackberry. After about a decade, birches and other small fast-growing trees move in, sprouting wherever the wind blows their lightweight seeds. In 30 to 40 years, slower-spreading trees like ash, red maple, and oak take root, followed by shade-tolerant trees such as beech and hemlock. What ecological concept does this example illustrate? Correct Answer-Succession
Evolving to appear similar to another successful species or to the environment in order to dupe predators into avoiding the species, or dupe prey into approaching the species is called... Correct Answer-
Mimicry
Change driven by the inhabitants of an ecosystem, such as forests regrowing on abandoned agricultural fields is termed Correct Answer-
Autogenic Succession
An interaction where one species benefits and the other is not affected is termed ___________. Correct Answer-Commensalism
A model that suggests that organisms that are able to move will distribute themselves according to the amount of food available, with higher concentrations of organisms located near higher concentrations of
food is called the... Correct Answer-Ideal Free Distribution Model
Which terrestrial geographic zones tend to have the highest plant and animal biodiversity? Correct Answer-Tropical A species ________ can be thought of as its range in practice, or the range of habitat types form which it is not excluded by competing species Correct Answer-Realized Niche
_________ describes the amount of energy that remains available for plant growth after subtracting the fraction that plants use for respiration. Correct Answer-Net Primary Productivity
Crash; A Tale of 2 Species Quiz Correct Answer-...
A fundamental concept in ecology that refers to the more or less predictable and orderly changes in the composition or structure of an ecological community. Correct Answer-succession
What are the predators of the horseshoe crab? Correct Answer-Sharks and sea turtles
When considering ecosystem functions such as trophic levels in food webs, migrations of various species, and population decline how does a decline in horseshoe crabs affect the larger ecosystem picture, if a decline does at all? Correct Answer-The spawning of the horseshoe crabs is timed with the red knot migration and a decline in horseshoe crabs will negatively affect the red knot population.
How old is the horseshoe crab species? Correct Answer-350 milliion years
