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WorksheetsGrade 10 Ecology Test
Total questions: 45
Worksheet time: 1hrs 11mins
What is the order of succession shown in this figure?
C, D , A, B
A, B, C, D
B, A, D, C
D, A, B, C
Organisms that produce their own food mostly through photosynthesis are called.
Heterotrophs
Chemotrophs
Autotrophs
Decomposers
Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products by releasing digestive enzymes on them to access the stored nutrients, then recycle nutrients back to the ecosystem are called ___________.
Decomposers
Detritivores
Autotrophs
Scavengers
Parts of an ecosystem that are living or deal with the living. Examples include producers, consumers, decomposers, predation, disease, competition, parasitism, and symbiosis.
Abiotic factors
Biotic factors
Ecosystem
Feeding relationships
Which of the following organisms is a primary consumer?
Grass
Rabbit
Fox
Snake
Which of the following organisms in competition with the weasel for their food source?
Grass
Rabbit
Fox
Snake
What would happen to the rabbit population if the fox population moved out of the area represented by the food web?
The rabbit population would increase
The rabbit population would decrease
The rabbit population would neither increase nor decrease
The rabbit population would become extinct
What might happen if you remove a primary consumer from the ecosystem?
There would be more food for secondary consumers.
The number of primary consumers would increase.
The number of plants would increase.
The number of secondary consumers would increase.
What does a food chain represent?
How all living organisms within a habitat are connected.
All of the things that a particular animal eats.
How plants create their own food.
A single path of energy transfer within a habitat.
The arrows in a food chain or web represents what?
They point to the organism that is being eaten.
It shows how sunlight flows within an ecosystem.
They show what direction the energy is flowing between organisms.
They represent how water is transferred within a habitat.
How much energy is passed on to each trophic level in a food chain?
10 %
1%
0.1%
50%
Variety of species or richness in the number of species in an ecosystem throughout the entire biosphere is the definition of ____________.
Genetic diversity
Ecosystem diversity
Species diversity
Interaction diversity
These dogs are all the same species, but they look very different from one another because of
Ecosystem diversity
Species diversity
Genetic diversity
None of the above.
Which of the following biomes represents the place that is MOST likely to have the highest species diversity?
Tundra
Rainforest
Grassland
Desert
Genetic diversity is important because
The more genetically diverse a population is, the more likely it is to survive environmental changes.
The more genetically diverse a population is, the cooler they look for National Geographic.
The more genetically diverse a population is, the more likely they are to go extinct.
None of the above
Earth's biosphere contains may different biomes (rainforest, deserts, tundras, savannah, grassland), this is an example of
Genetic biodiversity
Ecosystem biodiversity
Species diversity
Keystone biodiversity
Which of the following removes carbon from the atmosphere?
Combustion
Respiration
Photosynthesis
Death
How do animals get carbon?
By eating plants and or other animals.
They absorb it from the atmosphere.
From the soil
They do not get carbon from anywhere.
Which part of the carbon cycle occurs when plants, trees, or fossil fuels are burned?
Photosynthesis
Respiration
Combustion
Decomposition
How has man influenced the carbon cycle and increased the amount of carbon in the atmosphere?
Burning coal
Cutting down trees
Burning oil
All of the above
How does carbon get into the soil?
When a human dies
When a plant dies
When an animal dies
All of the above
The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?
X : Respiration
Y : Predation
X : Photosynthesis
Y : Decomposition
X : Fossilization
Y : Combustion
X : Decomposition
Y : Respiration
The blank box labelled X represents _______________.
Feeding
Decomposition
Carbon compound in animals
Respiration
State the letter of the two arrows that represent respiration
State the letter of the arrow that can only represent combustion in this cycle.
State the letter of the arrow that represents the process in the cycle that takes millions of years to happen.
Photosynthesis is not shown on the diagram. Draw an arrow to represent photosynthesis and label it P.
Write an equation for photosynthesis
What type of succession is shown going from figure A to figure B?
Primary succession
Ecological succession
Secondary succession
Intermediate succession
The picture shows what type of succession?
Primary
Secondary
Tertiary
Quaternary
What are examples of pioneer species in a primary succession?
Bushes and Shrubs
Oak trees
Mosses and Lichens
A rose Bush
What is the most important function of pioneer species?
To create rocks
To create soil and add nutrients to the environment
For beautification of the environment
Food for animals
Natural disasters such as flooding and tornadoes are linked to ________________.
Primary succession
Secondary succession
Ecosystems
Carbon cycle
Which of the following best describes primary succession?
Volcano wipes out ecosystem that gradually grows back from ash covered soil
Volcano creates a new island of rock that must break down to form an ecosystem
Forest fire burns down forest that must bounce back over time
Tornado destroys a crop that must slowly grow back over time.
Why does biodiversity increase during the course of succession?
Biodiversity refers to the difference in ages of organisms, so some organisms arrive earlier than others.
Over time, the same trees begin to reproduce and take over an area.
Many populations of organisms gradually begin to occupy the same area to create a climax community.
Many organisms move in to the area for a short amount of time, then leave to find a better habitat.
Humans often build asphalt or concrete roads to travel through areas, such as forests. After many years, plants can be seen growing on the roads. What kind of succession is this?
Primary
Secondary
Tertiary
Quaternary
What is the main difference between primary and secondary ecological succession?
Primary begins WITHOUT soil; Secondary begins WITH soil
Primary is the first state and secondary is the second stage
Primary builds plant community; secondary builds animal community
Primary begins WITH soil; Secondary begins WITHOUT soil
State and explain ONE consequence of loss of biodiversity.
Explain how seasonal variation results in changes within ecosystems
Explain how introduction of an invasive species into an ecosystem can cause it to change using an example of an invasive species that was introduced to The Cayman Islands.
_______ occurs when two organisms are trying to acquire or get the same resources.
Symbiosis
Competition
Predation
Collaboration
_______ occurs when 1 organisms kills and eats another for food.
Symbiosis
Competition
Predation
Collaboration
Two male deer fight over a female. This is an example of
Symbiosis
Competition
Collaboration
Predation
An organism in a food web that feeds directly on the producer.
Primary Consumer
Secondary Consumer
Decomposer
Carnivore
An organism in a food web that eats other consumers to obtain energy and is not eaten by another organism. Choose the BEST answer.
Producer
Top Consumer
Prey
Scavenger
