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WorksheetsEcology Unit Assessment
Total questions: 63
Worksheet time: 31mins
Which of the following would be an example of something considered a pioneer species?
Tree
Shrubs
Lichen
Rock
The type of change that occurs to our ecosystem after a tornado could best be described as _____________________.
Limiting Factor
Pioneer Species
Primary Succession
Secondary Succession
Which of the following best describes the type of succession that would occur when a volcano erupts killing all vegetation and soil that previous flourish in an environment.
Pioneer Species
Primary Succession
Secondary Succession
None of the Above
Which of the following is a factor that affects biodiversity?
Niche diversity
Area
Climate
All of the Above
What is poaching?
Polluting air, water, food
Illegal killing or moving from their habitat
Clearing forest or filling in wetlands
Conservation of land
Species that influence the survival of many other species in an ecosystem
Alpha species
Apex predator
Keystone species
Pioneer species
Which of the following is NOT a way biodiversity helps the economy?
Supplying food
Raw materials for clothing
Tourist companies
Tearing down of trees
Which is NOT a part of the water cycle?
Carbonation
Evaporation
Condensation
Precipitation
What is the process of turning free nitrogen into usable nitrogen?
Photosynthesis
Nitrogen Fixation
Carbon Fixation
Nitrogen Relaxation
Which two cycles are linked in an ecosystem? They have to work together to function properly.
Nitrogen and Oxygen
Water and Nitrogen
Water and Oxygen
Carbon and Oxygen
The amount of salt in water is known as
Solubility
Density
Salinity
Saltubility
What aquatic ecosystem would you find coral reef?
Marine
Estuary
River
Swamp
An aquatic ecosystem where freshwater and saltwater meet is
Swamp
River
Marine
Estuary
This biome is made of some coniferous trees but mostly maple and oak trees.
Tundra
Rainforest
Deciduous Forest
Grassland
This biome is frozen the majority of the year. It has a frozen layer called permafrost.
Desert
Grassland
Tundra
Deciduous Forest
This biome has the most biodiversity. It has three distinct layers and receives huge amounts of rainfall each year.
Rainforest
Tundra
Desert
Grassland
This biome receives less than 25 cm of rain each year. It is extremely hot during the day and cold at night
Rainforest
Desert
Boreal Forest
Grassland
Which is the correct order of the food pyramid starting from the bottom?
producer - primary consumer - tertiary consumer - secondary consumer - apex predator
producer - primary consumer - secondary consumer - tertiary consumer - apex predator
producer - secondary consumer - primary consumer - tertiary consumer - apex predator
primary consumer - secondary consumer - tertiary consumer - producer - apex predator
A food web shows
The flow of energy through one distinct path
A flow of energy through multiple paths
What a lion has for dinner
How a producer can give energy to multiple organisms
According the the energy pyramid, what level has the most available energy?
Level 1
Level 2
Level 3
Level 4
A food chain shows
The flow of energy through one distinct path
The flow of energy through multiple paths
What a lion has for dinner
How a producer can give energy to multiple organisms
Which of the following do the kookaburra consume?
Wedged tailed eagle
Grass
Mouse
Rabbit
In the food web below, which organism is the apex predator?
Kookaburra
Wedged Tail Eagle
Snake
Rabbit
Commensalism is
a relationship in which both species benefit
a relationship in which one species benefits and one is harmed
a relationship in which one species benefits and the other is not affected
anything that limits the size of populations
Why are decomposers important to the environment?
They provide food for predators
They are main food producers
They are important players in the water cycle
They provide nutrients for the growth of plants
Symbiosis is
anything that limits the size of the populations
relationships between species
a relationship in which both species benefit
a relationship in which one species benefits and one is harmed
Which of the following organisms is a herbivore?
Cow
Grass
Tiger
Snake
Plants would best describe what term below?
Producer
Tertiary Consumer
Secondary Consumer
Primary Consumer
Parasitism is
a relationship in which both species benefit
a relationship in which one species benefits and one is harmed
anything that limits the size of populations
a relationship in which one species benefits and the other is not affected
Which organism in a food pyramid receives the least amount of energy?
Primary consumer
Secondary consumer
Tertiary consumer
Producer
A tape worm lives and feeds from the intestines of a human to the human's detriment. What type of symbiotic relationship is described?
Commensalism
Mutualism
Parasitism
Which of the following groups would eat both plants and animals?
Herbivore
Omnivore
Carnivore
Producer
Which of the following describes the type of governmental prevention of invasive species that uses herbicides or pesticides to eliminate the risk of species growth?
Physical control
Biological control
Chemical control
All of the Above
Which of the following would NOT be an effect of an invasive species?
Emigration of native species
Decrease in resources
Natural competition
Carrying capacity reached quickly.
When a rabbit population in a meadow cannot grow any larger, it has reached its ___________.
climax community
carrying capacity
limiting factor
invasion
Mutualism is
a relationship in which both species benefit
a relationship in which one species benefits and the other is not affected
a relationship in which one species benefits and one is harmed
anything that limits the size of populations
The particular role of an organism including the type of food it eats, how it obtains food, and how it interacts with other organisms is called its ___________________.
Habitat
Niche
Population
Biome
The Nile crocodile opens its mouth to allow the Egyptian lover (a bird) to feed on any leeches attached to its gums. The crocodile does not harm the plover. What type of symbiotic relationship is described?
Mutualism
Commensalism
Parasitism
Using the graph, determine which population has NOT experienced the effects of a limiting factor?
1
2
3
4
Which is not a reason for the human populations exponential growth?
Advances in technology
The creation of vaccinations and life saving medicine
Natural Disasters
Use of natural resources
When organisms move into an environment, that is referred to as __________________.
Transfer
Immigration
Emigration
Carrying capacity
As the resources decrease in an ecosystem, the competition level _______________
Increase
Decrease
A factor that causes a population to stop growing or decrease in size is
Limiting Factor
Exponential Growth
Carrying Capacity
Density
When birth rate is higher than the death rate population will
Remain the same
Increase
Decrease
Identify a limiting factor from the list below.
Ability to perform photosynthesis
Flow of energy in a food chain
Growth of roots in the soil
Drought due to no rain
A disease kills most members of a predator population. What is MOST LIKELY effect on the prey population?
It will also be killed by disease
It will decrease in size
It will greatly increase in size
It will not be affected by the change in the predator population
Exponential growth occurs when
A population grows at an increasing rate
a population declines
A population as no change
There is no emigration
The largest rock pieces are found in
Silt
clay
Sand
Plants typically grow best in what pH of soil?
pH 7- pH 8.5
pH 6- pH 7.5
pH 5- pH 6.5
pH 4- pH 5.5
What is another name for horizon B?
Humus
Topsoil
Subsoil
Bedrock
The horizon labeled #4 is formed as bedrock begins to weather. What horizon is it?
O Horizon
B Horizon
C Horizon
Bedrock
The horizon labeled #2 is made up of topsoil, what is it?
O Horizon
A Horizon
B Horizon
C Horizon
A soil that has a large amount of humus will be
infertile
dry
hold too much moisture
fertile
A dark colored substance that is formed from dead decaying matter is known as?
Topsoil
Bedrock
Clay
Humus
The giraffes in this picture illustrate
Organism
Population
Community
Ecosystem
One or more communities in an area and the abiotic factors make up a(n) ______________.
Ecosystem
Community
Population
Biome
Several ecosystems grouped together according to the climate and the majority of vegetation make up a __________________.
Ecosystem
Biome
Population
Community
Many populations in a specific area or region at a certain time make up a ___________________.
Community
Ecosystem
Biome
Species
The animals in this picture illustrates
Population
Community
Ecosystem
Biome
A (n) ___________________ consists of all the individuals of the same species in a specific area or region at a certain time.
Niche
Habitat
Population
Community
Which list of terms is in the correct order, from simplest to most complex?
organism, community, population, ecosystem, biome
organism, population, community, biome, ecosystem
organism, population, community, ecosystem, biome
organism, community, ecosystem, population, biome
Which of the following contributes to the ecosystem in an ABIOTIC way?
animals on land
animals in water
trees
water
A(n) ______________________ is the place where an organism lives in order to obtain its food, water, shelter and other things needed for survival.
Ecosystem
Community
Niche
Habitat
