AP/DE Bio 101 - Video Recap - Phytoplankton & Carbon Cycling

Quiz
•
Science
•
11th Grade
•
Medium
+7
Standards-aligned
Marcy Maulucci-Bragdon
Used 4+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What process do plants use to remove carbon from the atmosphere?
Respiration
Photosynthesis
Decomposition
Combustion
Answer explanation
Plants use photosynthesis to absorb carbon dioxide from the atmosphere, converting it into glucose and oxygen using sunlight. This process is essential for their growth and helps reduce atmospheric carbon levels.
Tags
NGSS.HS-LS1-5
NGSS.HS-LS2-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which tiny marine plants are the base of the marine food web?
Zooplankton
Phytoplankton
Algae
Seaweed
Answer explanation
Phytoplankton are tiny marine plants that form the foundation of the marine food web, serving as the primary producers that convert sunlight into energy, which supports a wide range of marine life.
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does carbon move up the food chain in the ocean?
Through photosynthesis
By being eaten by animals
By dissolving in water
Through decomposition
Answer explanation
Carbon moves up the food chain in the ocean primarily by being eaten by animals. When smaller organisms, like phytoplankton, are consumed by larger animals, carbon is transferred through the food web.
Tags
NGSS.HS-LS2-3
NGSS.HS-LS2-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do phytoplankton play in the Earth's oxygen production?
They produce all of the Earth's oxygen.
They produce half of the Earth's oxygen.
They produce none of the Earth's oxygen.
They produce a quarter of the Earth's oxygen.
Answer explanation
Phytoplankton are crucial for oxygen production, contributing about half of the Earth's oxygen through photosynthesis. This makes them essential for maintaining the planet's oxygen levels.
Tags
NGSS.HS-LS2-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to carbon when phytoplankton die and decompose?
It is released as oxygen.
It is recycled in surface waters or sinks to the ocean floor.
It is converted into fossil fuels.
It is absorbed by marine animals.
Answer explanation
When phytoplankton die, the carbon they contain is recycled in surface waters or sinks to the ocean floor, contributing to the ocean's carbon cycle. This process helps maintain the balance of carbon in marine ecosystems.
Tags
NGSS.HS-ESS2-6
NGSS.HS-LS2-3
NGSS.HS-LS2-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain how the ocean acts as a carbon sink.
It releases carbon into the atmosphere.
It absorbs carbon through physical and biological processes.
It stores carbon in the form of fossil fuels.
It converts carbon into oxygen.
Answer explanation
The ocean acts as a carbon sink by absorbing carbon dioxide from the atmosphere through physical processes like diffusion and biological processes such as photosynthesis by marine plants, helping to regulate global carbon levels.
Tags
NGSS.HS-ESS2-6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the impact of increased CO2 levels on ocean acidity?
It decreases ocean acidity.
It has no effect on ocean acidity.
It increases ocean acidity.
It neutralizes ocean acidity.
Answer explanation
Increased CO2 levels lead to more carbonic acid formation in oceans, which lowers pH and increases acidity. Therefore, the correct answer is that it increases ocean acidity.
Tags
NGSS.HS-ESS2-6
NGSS.HS-LS2-5
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