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WorksheetsAquatic Ecosystem Quiz
Total questions: 15
Worksheet time: 8mins
What is the main component of water?
Oxygen and Carbon
Hydrogen and Oxygen
Hydrogen and Nitrogen
Hydrogen and Helium
What percentage of Earth's water is fresh water?
50%
10%
3%
1%
What process in the water cycle leads to cloud formation?
Condensation
Evaporation
Transpiration
Precipitation
What is the pH value of pure water?
9
8
7
6
Which gas is primarily responsible for photosynthesis in aquatic environments?
Hydrogen
Carbon Dioxide
Oxygen
Nitrogen
What is the main source of oxygen in water?
Algae
Coral
Phytoplankton
Fish
What happens to the density of water as it freezes?
It increases
It decreases
It stays the same
It evaporates
What is the role of solar radiation in aquatic environments?
It cools the water
It helps plants grow
It creates waves
It makes water salty
Which of the following is a physiological adaptation of deep-sea fish?
Large eyes
Bright colors
Small fins
Flat bodies
What is the effect of increased CO2 levels in water?
Decreased temperature
Acidification
Increased oxygen levels
Increased salinity
What is the main reason for the high specific heat of water?
Temperature
Hydrogen bonds
Oxygen content
Salinity
What is the primary function of gills in fish?
To help them swim
To regulate temperature
To absorb oxygen
To digest food
What is the main factor affecting the solubility of gases in water?
Salinity
Temperature
Pressure
Light
What happens to the temperature of water during the day?
It cools down
It stays the same
It heats up
It evaporates
Which zone in the ocean is known for photosynthesis?
Euphotic zone
Deep zone
Twilight zone
Aphotic zone
