
01 - Aquatic Abiotic and Biotic Factors
Presentation
•
Science
•
12th Grade
•
Practice Problem
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Easy
+5
Standards-aligned
Rachel von Bodungen
Used 5+ times
FREE Resource
19 Slides • 17 Questions
1
2
3
Open Ended
How can changes to Earth's surface impact aquatic ecosystems and their ability to sustain life?
4
Multiple Choice
Why is it important to understand the factors that affect the carrying capacity of aquatic ecosystems?
To predict population growth in aquatic environments
To manage resources sustainably
To prevent pollution
All of the above
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10
Multiple Choice
Which of the following is an abiotic factor that shapes aquatic ecosystems?
Plankton
Salinity
Decomposers
Benthos
11
Multiple Select
Which statements about salinity and hardness are correct?
Salinity is formed by the weathering of rocks
Hardness is the amount of minerals in freshwater
Higher salinity water is less dense
Hardness is related to dissolved oxygen
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13
Open Ended
Compare how temperature at the surface of the ocean differs near the equator versus near the poles.
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15
Multiple Choice
How does the availability of sunlight change as water depth increases?
It increases
It decreases
It stays the same
It fluctuates randomly
16
Match
Photic
Aphotic
Benthic
The portion of water that the light can penetrate.
The portion of water that light CANNOT penetrate.
Bottom of a body of water.
The portion of water that the light can penetrate.
The portion of water that light CANNOT penetrate.
Bottom of a body of water.
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Multiple Choice
Why is dissolved oxygen typically higher in cold, turbulent water compared to warm, stagnant water?
Because cold water holds less oxygen
Because turbulence increases oxygen mixing
Because warm water is denser
Because stagnant water is cleaner
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Multiple Choice
Which of the following statements about pH is correct?
A pH of 7 is acidic
A pH below 7 is basic
A pH above 7 is acidic
A pH of 7 is neutral
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Multiple Choice
Nutrients such as nitrates and phosphates are important for algae growth. What is one possible consequence of excessive nutrient runoff into water bodies?
Decreased water temperature
Increased algae growth
Decreased turbidity
Increased sunlight penetration
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Drag and Drop
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Multiple Choice
Use academic terms to describe the following scenario: As turbidity increases in a lake, what happens to dissolved oxygen levels?
Dissolved oxygen increases
Dissolved oxygen decreases
Dissolved oxygen stays the same
Turbidity does not affect dissolved oxygen
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​https://www.youtube.com/watch?v=xuJiUscfjQw
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Open Ended
In 3-4 sentences: How would you describe the characteristics of the brink lake environment?
Address the abiotic factors: salinity, light levels, and dissolved oxygen levels.
How did the organisms respond to the environment?
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Multiple Choice
Which abiotic factor is most likely responsible for the salt formations seen in the first image?
High temperature
High salinity
Low oxygen levels
Presence of aquatic plants
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Categorize
Small, free-floating or weakly swimming
Large, independent swimmers
Bottom-dwellers
Break down dead organisms and waste, cycling nutrients back into the water.
Limited or no movement.
phytoplankton
zooplankton
fish
coral
crab
bacteria
basis of the food chain in aquatic ecosystems
transfer energy up the food chain
break down dead organic matter and oxygenate sediments through borrowing.
maintain water quality by recycling nutrients back into the ecoystem
Match the roles and examples of plankton, nekton, benthos, and decomposers contribute to the overall health of an aquatic ecosystem.
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​https://www.youtube.com/watch?v=sGXHJvEttpE
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Drag and Drop
The Trigger Fish in the clip is
36
Multiple Choice
Reflecting on today's lesson about aquatic ecosystems, what is one factor that can affect the carrying capacity of an ecosystem?
Availability of sunlight
Presence of predators
Amount of nutrients
All of the above
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