Plankton

What are plankton?

• Large predatory fish

• Organisms that actively swim against currents

• Weakly swimming or drifting organisms

• Only microscopic organisms

What are the two primary categories of plankton?

• Bacteria and algae

• Phytoplankton and Zooplankton

• Fish and invertebrates

• Seaweed and coral

Why are plankton important?

• They play a role in the global carbon cycle

• They cause pollution in the ocean

• They deplete oxygen from the atmosphere

• They are harmful to marine ecosystems

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-5

What percentage of marine primary production is from phytoplankton?

• 50%

• Over 90%

• 10%

• 75%

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is one of the primary functions of phytoplankton?

• Producing oxygen through photosynthesis

• Consuming large marine organisms

• Decomposing dead fish

• Swimming freely in deep water

Tags

NGSS.MS-LS1-6

What equation represents photosynthesis?

• O₂ + H₂O → CO₂ + glucose

• CO₂ + H₂O → C₆H₁₂O₆ + O₂

• CO₂ + O₂ → H₂O + sunlight

• C₆H₁₂O₆ + O₂ → CO₂ + H₂O

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How are plankton collected for study?

• With special nets and sampling bottles

• By scuba divers capturing them by hand

What is a bongo net used for?

• Tracking large fish migration

• Collecting plankton from the ocean

• Measuring ocean temperature

• Studying coral reefs

What are holoplankton?

• Organisms that spend their entire life cycle as plankton

• Organisms that temporarily drift but later settle

• Fish that feed on plankton

• Microscopic algae

Which of the following is an example of holoplankton?

• Diatoms

• Crab larvae

• Fish larvae

• Octopus larvae