Which of the following is TRUE of predator/prey relationships?

The number of predators is determined by available prey.

The amount of prey does not affect the number of predators.

Herbivores are limited by the number of prey in an ecosystem.

Humans are not considered predators.

When a specific population grows past the ecosystem's carrying capacity, what happens to the population?

Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.

Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.

The population will go extinct due to lack of resources

The population grows then finds a new carrying capacity

Which of the following is an example of competition?

Two vultures fight over a dead rabbit

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

a system of interlocking and interdependent food chains.

All the living organisms that inhabit an environment

A series of steps in which organisms transfer energy by eating and being eaten

indirect effects in a community that are initiated by a predator

All the living organisms that inhabit an environment

The number of different species in an area

Each step in a food chain or food web

indirect effects in a community that are initiated by a predator

The number of different species in an area

All the living organisms that inhabit an environment

A series of steps in which organisms transfer energy by eating and being eaten

a system of interlocking and interdependent food chains

An environmental factor that prevents a population from increasing

Each step in a food chain or food web

The number of different species in an area

Each step in a food chain or food web

indirect effects in a community that are initiated by a predator

a system of interlocking and interdependent food chains.

A series of steps in which organisms transfer energy by eating and being eaten

An environmental factor that prevents a population from increasing

(1). air(2). water(3). sunlight(4). soil(5). temperature(6). climate

An environmental factor that prevents a population from increasing

Largest number of individuals of a population that a environment can support

(1). air(2). water(3). sunlight(4). soil(5). temperature(6). climate

All the living organisms that inhabit an environment

Abiotic factors examples

(1). air(2). water(3). sunlight(4). soil(5). temperature(6). climate

All the living organisms that inhabit an environment

An environmental factor that prevents a population from increasing

ecosystem has to maintain stable condition in order for all organisms to survive

All the living organisms that inhabit an environment

An environmental factor that prevents a population from increasing

(1). air(2). water(3). sunlight(4). soil(5). temperature(6). climate

The removal of trees faster than forests can replace themselves.

What is a trophic cascade?

A series of secondary extinctions triggered by the primary extinction of a key species in an ecosystem.

A process where nutrients flow from one trophic level to another.

The migration of species from one habitat to another.

The increase in population size of a species at the bottom of the food chain.

How can the removal of a keystone species affect an ecosystem?

It can cause a trophic cascade and disrupt the ecosystem balance.

It can lead to a more stable ecosystem.

Which of the following best describes a food web?

A complex network of feeding relationships among organisms in an ecosystem.

A linear sequence of who eats whom in an ecosystem.

A single pathway of feeding relationships among organisms in an ecosystem.

A graphical representation of the energy flow in an ecosystem.

What happens to energy as it moves up the food chain?

It decreases due to energy loss at each trophic level.

Why are keystone species important for biodiversity?

They help to maintain the structure and integrity of the ecosystem.

They are the most numerous species in their ecosystems.

They provide food for all other species.

They have no predators, ensuring their survival.

What could be a direct consequence of removing a top predator from an ecosystem?

An increase in the population of herbivores, leading to overgrazing.

A decrease in the population of primary consumers.

An increase in the diversity of plant species.

A decrease in the overall biodiversity of the ecosystem.

1. What makes a species invasive?

Moving to a new ecosystem and taking resources from natives

Plants that take up too much space

When taken to a new habitat, non-native plants often threaten native plants of the new habitat. Why do they do this?

Non-native plants compete with native plants for resources

Non-native plants are able to mutate rapidly

Non-native plants cause native animals to relocate

Non-native plants are able to be used for medicine

What effect will an invasive species have on the carrying capacity of an ecosystem?

The carrying capacity will only decrease for those in competition for same resource

The carrying capacity will increase

The carrying capacity for everyone will decrease

The carrying capacity for all animals will stay the same

Unit 2 - Ecology

Authored by Shelby Elizabeth HamlinBowe

Biology

9th Grade

89 Questions

NGSS covered

Used 1+ times

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of growth is represented behind?

exponential

logistics

a good kind

representative

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an EXAMPLE of a density-dependent limiting factor?

Water

Major flood.

Migration

Thick fur

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number of individuals a habitat can sustain with the resources it has available

Carrying capacity

Limiting factors

Resources

Population

Tags

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An environmental factor such as storms and extreme heat or cold that affects population regardless of their density

density- dependent factor

population density

dispersion

density- independent factor

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An environmental factor such as predation, disease, and competition that depends on the number of members in a population per unit

dispersion

density- independent factor

density- dependent factor

population growth rate

Tags

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a limiting factor do?

makes a population grow large

stops a population from growing large

helps organisms adapt to abiotic factors

provides geographical boundaries for migration

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

Squirrel Population

Sunlight

Grass available

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

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Unit 2 - Ecology

What type of growth is represented behind?

Which of the following is an EXAMPLE of a density-dependent limiting factor?

The number of individuals a habitat can sustain with the resources it has available

An environmental factor such as storms and extreme heat or cold that affects population regardless of their density

An environmental factor such as predation, disease, and competition that depends on the number of members in a population per unit

What does a limiting factor do?

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

Which of the following is TRUE of predator/prey relationships?

Which limiting factor is independent of the number of individuals in a population?

Which limiting factor would increase due to the number of individuals in a population?

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