How are food webs different from food chains?

They show many interconnected food relationships

What is logistic growth?

Growth that slows down as it reaches carrying capacity

what are abiotic factors?

Non-living parts of an environment

What are decomposers?

Organisms that bead down dead matter

What is carrying capacity?

The maximum number of organisms an environment can sustain

A close relationship between different species

What is an ecological footprint?

Its a measure of human impact on the environment

What are biotic factors?

Living things in an environment

What are pioneer species?

First organisms to live in a new environment

How does competition affect population size?

It can limit growth by reducing resources

What is the Carbon cycle?

It moves carbon through ecosystems for life processes

How does secondary succession happen?

After a disturbance that doesn't destroy soil

How do plants get nitrogen?

From nitrogen compounds in the soil

What is exponential growth?

Growth that speeds up over time

Water flowing across land into rivers or oceans

Total amount of living matter in a trophic level

What is the water cycle?

The movement of water through the earth

Why is nitrogen important?

It's needed to build proteins and DNA

What is primary succession?

Life that starts in areas with no soil

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Ecology Quiz

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Questions 25

Answers

1
How are food webs different from food chains?
Food webs only show producers
They show many interconnected food relationships
Food chains include all decomposers
Food chains are longer than food webs
2
What is logistic growth?
Growth that doubles every hour
Growth that slows down as it reaches carrying capacity
Growth that is indefinite and shows no signs of stopping
A sudden population crash
3
what are abiotic factors?
A type of Invasive species
Number of animals in an area
Non-living parts of an environment
All bacteria and fungi
4
What are decomposers?
Organisms that bead down dead matter
What plants are called after photosynthesis
Primary producers that eat bacteria
Another name for animals that hunt in packs
5
What is carrying capacity?
How much food an animal can carry after a hunt
The maximum number of organisms an environment can sustain
The total number of predators in a food chain/web
How many offspring an animal can have
6
What is symbiosis?
Predator-prey interactions
Competition for water
A close relationship between different species
The name for a group of the same species
7
What is an ecological footprint?
Its a measure of human impact on the environment
Its the size of a shoe print in dirt paths
Its a populations birth rate
Its the marked area in a park
8
What are biotic factors?
Rocks and other minerals
Air and water
Sunlight and wind
Living things in an environment
9
How can exponential growth happen?
When predators increase
When resources are limited
When birth rate = death rate
When areas are polluted
10
What are pioneer species?
Type of species that live in the ocean
A large type of tree that dominates forests
Apex predators in the food chain/web
First organisms to live in a new environment
11
How does competition affect population size?
It always leads to extinction of a species
It has no effect at all
It can limit growth by reducing resources
It increases populations indefinitely
12
What is the Carbon cycle?
It moves carbon through ecosystems for life processes
It clears all oxygen before entering our bodies
It creates new water
It stops photosynthesis for plants
13
How does secondary succession happen?
In a volcanic rock
After a disturbance that doesn't destroy soil
After water levels rise in an area
When new planets form
14
How do plants get nitrogen?
By eating animals
From nitrogen compounds in the soil
Through photosythesis
Directly from the air
15
What happens to biomass as you move up the trophic levels?
It is infinite
It stays the same
It decreases
It increases
16
What are trophic levels?
Levels of soil moisture
Types of climate zones
Stages in plant growth
Steps in a food chain/web
17
What is exponential growth?
Growth that stops after a few generations
Growth that never changes
Growth that speeds up over time
Growth that decreases steadily
18
What is runoff?
Water that sinks deep into the soil
water going off its original course
Clouds forming from condensation
Water flowing across land into rivers or oceans
19
What is biomass?
The weight of non-living material
Dead soil particles
Total amount of living matter in a trophic level
Energy from the sun
20
Which one of these is a fossil fuel?
Wood
Sunlight
Coal
Water
21
What is a climax community?
An unstable area after a disturbance
An environment with a lot of organisms
A newly formed environment
A stable and mature ecosystem
22
What is the water cycle?
The freezing of ice
The movement of water through animals
The movement of water through the earth
The movement of water in the sea
23
Why is nitrogen important?
It makes up carbohydrates
It creates salt in oceans
It's needed to build proteins and DNA
It's the main source of energy
24
What is primary succession?
Life that starts in areas with no soil
Recovery after a flood
When a climax community is replaced
The growth of crops after farming
25
How many types of ecological succession are there?
4
6
10
2

Ecology Quiz Flashcards | StudBud