An invasive species is best described as:

A non-native species that causes harm to the environment

What is the best definition of a population?

A group of individuals of the same species living in the same area

Carrying capacity is:

The maximum population size that an environment can support

What is primary succession?

The development of a new ecosystem where no soil previously existed

What are the 3 levels of ecology?

Population, community, ecosystem

A large region characterized by climate, vegetation, and wildlife

Which poikilothermic, ectothermic semelparous organism has the highest basal metabolic rate (mm^3 O2/g body mass/hr)

Hippogriff, Totoro, Bulbasaur, Ewok

Population density is defined as:

The number of individuals per unit area

Which equation correctly represents population growth rate (r)?

r = (births + immigrants) - (deaths + emigrants) ÷ population size

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ACH Ecology Review

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Questions 25

Answers

1
A snake that eats a frog, which ate an insect, would be a:
Producer
Secondary consumer
Tertiary consumer
Primary consumer
2
An invasive species is best described as:
A non-native species that benefits an ecosystem
A predator that eats other species
A non-native species that causes harm to the environment
A native species that grows rapidly
3
If a population starts at 100, with 20 births, 5 deaths, 10 immigrants, and 5 emigrants, what is the growth rate (r)?
0.15
0.10
0.05
0.20
4
Which biome is characterized by permafrost and short growing seasons?
Temperate Coniferous Forest
Tundra
Desert
Temperate Carnivorous Forest
5
Which of the following IS NOT a dispersion pattern?
Random
Clumped
Oblong
Uniform
6
In a mutualism:
Both species benefit
One species benefits and the other is unaffected
One species benefits and one is harmed
Both species are harmed
7
What distinguishes secondary succession from primary succession?
Soil is already present
It does not involve pioneer species
No organisms are involved
It happens underwater
8
What is the best definition of a population?
All organisms living in a specific biome
A community of interacting species
All abiotic and biotic factors in an area
A group of individuals of the same species living in the same area
9
Carrying capacity is:
The average number of predators per ecosystem
The maximum population size that an environment can support
The number of offspring an organism can produce
The maximum number of species in a food web
10
What is primary succession?
The regrowth of a forest after a fire
The development of a new ecosystem where no soil previously existed
The introduction of invasive species
The migration of animals into a new area
11
What are the 3 levels of ecology?
Mutualism, commensalism, parasitism
Population, community, ecosystem
Genetics, evolution, ecology
Individual, species, community
12
Two bird species both nest in the same tree. This is an example of:
Competition
Predation
Mutualism
Parasitism
13
What is a biome?
A type of rock formation
A man made ecosystem
A large region characterized by climate, vegetation, and wildlife
A population of animals
14
A lion hunts and eats a zebra. This is an example of:
Competition
Predation
Commensalism
Mutualism
15
Which biome is known for low rainfall and extreme temperatures?
Temperate rainforest
Tundra
Grassland
Desert
16
Which of the following is an invasive species in Washington State?
Bald Eagle
King Salmon
Brown Marmorated Stink Bug
Red-Tailed Hawk
17
Which of the following is a density-independent limiting factor?
Hurricane
Competition for mates
Predation
Parasitism
18
Which poikilothermic, ectothermic semelparous organism has the highest basal metabolic rate (mm^3 O2/g body mass/hr)
Hippogriff
Totoro
Bulbasaur
Ewok
19
In a food web, producers are organisms that:
Eat herbivores
Consume carnivores
Make their own food
Break down dead matter
20
What is the reason for our area's high desert biome?
Rain Shadow Effect
Rain Blocking Effect
Rain Shade Effect
Snow Shadow Effect
21
Which of the following is an example of parasitism?
A bird building a nest in a tree
A tick on a dog
An owl hunting a mouse
A bee pollinating flower
22
Which of the following is a density-dependent limiting factor?
Natural disasters
Wildlife
Temperature extremes
Disease
23
Population density is defined as:
The number of species in an ecosystem
The number of individuals per unit area
The average mass of organisms in a habitat
The number of predators per prey species
24
Which equation correctly represents population growth rate (r)?
r = births - deaths
r = (deaths + emigrants) - (births + immigrants)
r = (births + immigrants) - (deaths + emigrants) ÷ population size
r = (births + emigrants) - (deaths + immigrants)
25
Which factor could decrease population density?
Increased emigration
Immigration
Increased food supply
Decrease in predators

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