Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

geography rocks and mineral > biology > Flashcards

biology Flashcards

ecosystem

1
Q

What is an ecosystem?

A

An ecosystem is a community of living organisms interacting with one another and their physical environment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

True or False: Ecosystems only include living organisms.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the two main components of an ecosystem?

A

Biotic (living) and abiotic (non-living) components.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Fill in the blank: The __________ is the largest level of organization in ecology.

A

Biosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a habitat?

A

A habitat is the natural environment in which an organism lives.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the role of producers in an ecosystem?

A

Producers, such as plants, convert sunlight into energy through photosynthesis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Multiple choice: Which of the following is NOT a primary consumer? A) Rabbit B) Deer C) Hawk D) Grasshopper

A

C) Hawk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a food chain?

A

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

True or False: Decomposers break down dead organic material and recycle nutrients back into the ecosystem.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is biodiversity?

A

Biodiversity refers to the variety of life in a particular ecosystem or on Earth as a whole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Fill in the blank: The __________ level of organization in ecology includes populations of different species.

A

Community

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the difference between a population and a community?

A

A population consists of individuals of the same species, while a community includes multiple populations of different species.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Multiple choice: Which of the following is an abiotic factor? A) Soil B) Plants C) Animals D) Bacteria

A

A) Soil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is an ecological niche?

A

An ecological niche is the role and position a species has in its environment, including its habitat, resource use, and interactions with other species.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

True or False: All ecosystems are self-sustaining.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is carrying capacity?

A

Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably.

17
Q

Fill in the blank: __________ are organisms that eat primary consumers.

A

Secondary consumers

18
Q

What is a trophic level?

A

A trophic level is a position in a food chain or food web, defined by the number of energy transfer steps from primary producers.

19
Q

Multiple choice: Which of the following best describes a keystone species? A) A species that is abundant in an ecosystem B) A species that has a disproportionately large effect on its environment C) A species that is at the top of the food chain D) A species that migrates seasonally

A

B) A species that has a disproportionately large effect on its environment

20
Q

What is ecological succession?

A

Ecological succession is the process by which ecosystems change and develop over time, often following a disturbance.

21
Q

True or False: Invasive species can disrupt the balance of an ecosystem.

A

True

22
Q

What is the primary source of energy for most ecosystems?

A

The sun

23
Q

Fill in the blank: __________ is the process by which carbon is cycled through the environment.

A

The carbon cycle

24
Q

What is a biome?

A

A biome is a large geographical area characterized by specific climate conditions and distinct plant and animal communities.

25
Q

Multiple choice: Which of the following is an example of a terrestrial biome? A) Coral reef B) Desert C) Freshwater D) Estuary

A

B) Desert

26
Q

What is the significance of the nitrogen cycle?

A

The nitrogen cycle is crucial for converting nitrogen into forms that living organisms can use, thus supporting life.

27
Q

True or False: Ecosystems can be affected by human activities.

A

True

geography rocks and mineral (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions