How has human transportation impacted the introduction of species into new ecosystems?

It has increased the introduction of species

What is the process through which nitrogen enters the living world?

Nitrogen fixation by free-living and symbiotic bacteria

What does a tolerance curve plot against environmental conditions?

Number of individuals against environmental condition

What is used to modify behavior in operant conditioning?

Positive or negative reinforcement

What is the main characteristic of Batesian mimicry?

A harmless species imitating a harmful one.

What does biomass refer to in an ecosystem?

The total mass of living organisms in a trophic level

How are the eight major terrestrial biomes on Earth distinguished?

By characteristic temperatures and amount of precipitation.

What is the main driver of the "tragedy of the commons"?

Economic profits for individuals

What is the significance of fast-moving water in rivers and streams?

Resulting in clear oxygen rich water

How can climate be described in relation to weather?

Climate is the average weather for years, weather is over a short period.

Which of the following best describes the biological levels of organization from organismal ecology to the biosphere?

Organism, community, ecosystem, biosphere

What makes endemic species particularly vulnerable to extinction?

Their presence in only one location.

How do Antarctic ice cores provide insights into past climate conditions?

By trapping air bubbles that indicate carbon dioxide data.

What are Fixed Action Patterns?

A series of movements elicited by a stimulus that goes on to completion.

What role do bees play in providing ecosystem services for agriculture?

Pollinating plants for crop production.

What do foundation species do to benefit other organisms in an ecosystem?

They physically modify the environment to benefit other organisms.

What is net primary productivity in an ecosystem?

The energy remaining in primary producers after respiration and heat loss

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Bio 181 Exam 1 Review

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Questions 22

Answers

1
How has human transportation impacted the introduction of species into new ecosystems?
It has led to species extinction
It has decreased species dispersal
It has no impact on ecosystems
It has increased the introduction of species
2
What is the process through which nitrogen enters the living world?
Respiration
Nitrogen fixation by free-living and symbiotic bacteria
Photosynthesis
Diffusion from the atmosphere
3
What does a tolerance curve plot against environmental conditions?
Number of species against habitat availability
Number of individuals against environmental condition
Number of species against species diversity
Number of individuals against population density
4
What is used to modify behavior in operant conditioning?
Punishment only
Unconditioned responses
Conditioned stimuli
Positive or negative reinforcement
5
What is the main characteristic of Batesian mimicry?
Multiple species imitating the same warning coloration.
A harmless species imitating a harmful one.
A predator imitating its prey.
A deadly prey mimicking a less dangerous one.
6
How does the distribution of death occur in populations with a Type II survivorship curve?
Primarily in younger individuals
Equally at each age interval
Primarily in older individuals
Randomly across all age groups
7
How do you calculate density?
Population / area
Area / population
Births / Death
Current population / Average population
8
What does biomass refer to in an ecosystem?
The amount of water in the ecosystem
The energy stored in primary producers
The number of trophic levels present
The total mass of living organisms in a trophic level
9
How are the eight major terrestrial biomes on Earth distinguished?
By characteristic temperatures and amount of precipitation.
By the altitude at which each biome is located.
By the presence of specific animal species in each biome.
By the amount of sunlight received in each biome.
10
What is the main driver of the "tragedy of the commons"?
Economic profits for individuals
Anger towards nature
Careless accidents
Long term benefits
11
What is the significance of fast-moving water in rivers and streams?
Decreasing the width of the channel
Attracting large predators
Causing high levels of silt accumulation
Resulting in clear oxygen rich water
12
What type of offspring do K-selected species typically have?
No offspring
Few large offspring
Medium-sized offspring
Many small offspring
13
How can climate be described in relation to weather?
Climate is the short-term, while weather is the long-term patterns.
Climate and weather are interchangeable terms.
Climate is determined by nature, while weather is influenced by humans.
Climate is the average weather for years, weather is over a short period.
14
Where is one of the worst dead zones located, caused by fertilizer runoff?
Arctic Ocean
Pacific Ocean
Gulf of Mexico
Indian Ocean
15
Which of the following best describes the biological levels of organization from organismal ecology to the biosphere?
Ecosystem, biome, biosphere, population
Organism, community, ecosystem, biosphere
Species, population, community, biome
Individual, population, community, biome
16
What makes endemic species particularly vulnerable to extinction?
Their presence in only one location.
Their ability to adapt to changing environments.
Their resistance to diseases and predators.
Their wide distribution across multiple locations.
17
How do Antarctic ice cores provide insights into past climate conditions?
By trapping air bubbles that indicate carbon dioxide data.
By revealing historical weather forecasts.
By predicting future climate trends.
By containing samples of tropical ice.
18
What are Fixed Action Patterns?
A series of movements that are only partially completed.
A series of movements elicited by a stimulus that goes on to completion.
A series of movements that are learned through trial and error.
A series of movements that are random and incomplete.
19
What role do bees play in providing ecosystem services for agriculture?
Controlling weed growth in agricultural fields.
Irrigating crops with water for growth.
Pollinating plants for crop production.
Fertilizing soil through crop rotation techniques.
20
What do foundation species do to benefit other organisms in an ecosystem?
They prey on other species for survival.
They compete with other species for resources.
They have no impact on the ecosystem.
They physically modify the environment to benefit other organisms.
21
What is net primary productivity in an ecosystem?
The energy stored in primary producers
The energy consumed by secondary consumers
The energy remaining in primary producers after respiration and heat loss
The energy lost through respiration
22
What is the maximum population size that a particular environment can support?
Population growth
Exponential growth
Carrying capacity
Logistic growth

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