- 1. What is the primary source of energy for phytoplankton?
A) Seawater
B) Chemical energy
C) Volcanic heat
D) Sunlight
- 2. What is the process of zooplankton feeding on phytoplankton called?
A) Grazing
B) Erosion
C) Burrowing
D) Pollination
- 3. Which organism is considered a primary producer in the plankton community?
A) Phytoplankton
B) Jellyfish
C) Herring
D) Shrimp
- 4. What type of plankton feeds on other plankton as part of the marine food chain?
A) Virioplankton
B) Bacterioplankton
C) Phytoplankton
D) Zooplankton
- 5. What is the dominant form of plankton in highly productive coastal waters?
A) Copepods
B) Diatoms
C) Shrimp
D) Krill
- 6. What is the process by which zooplankton migrate vertically in the water column called?
A) Sedimentation
B) Diel vertical migration
C) Horizontal dispersion
D) Static suspension
- 7. Which of the following is a common feeding strategy of zooplankton?
A) Scavenging
B) Photosynthesis
C) Filter feeding
D) Predation
- 8. What structures do some phytoplankton have that help them regulate their buoyancy?
A) Muscles
B) Gas vacuoles
C) Stingers
D) Eyes
- 9. Plankton are primarily found in which habitat?
A) Deserts
B) Aquatic environments
C) Mountains
D) Tundras
- 10. Which of the following is not a type of plankton?
A) Zooplankton
B) Bacterioplankton
C) Jellyfish
D) Phytoplankton
- 11. Which of the following is a type of harmful algal bloom caused by excess plankton growth?
A) Blue tide
B) Red tide
C) Green tide
D) Yellow tide
- 12. What is the general term for small marine organisms that drift with ocean currents?
A) Tuna
B) Shark
C) Krill
D) Plankton
- 13. What is the term for tiny particles that are transported by ocean currents and provide a surface for plankton to attach to?
A) Marine snow
B) Coral reefs
C) Mangroves
D) Seaweed
- 14. What is the term for plankton that spend their entire life cycle as part of the plankton community?
A) Meroplankton
B) Zooplankton
C) Holoplankton
D) Phytoplankton
- 15. What type of plankton are bacteria that drift in the water column?
A) Phytoplankton
B) Virioplankton
C) Bacterioplankton
D) Zooplankton
- 16. What is the term used to describe plankton that can move against currents?
A) Nekton
B) Benthos
C) Holoplankton
D) Tychoplankton
- 17. What is the main gas used by plankton in the process of photosynthesis?
A) Oxygen
B) Nitrogen
C) Hydrogen
D) Carbon dioxide
- 18. Plankton play a crucial role in the global carbon cycle by performing which process?
A) Respiration
B) Photosynthesis
C) Decomposition
D) Chemical weathering
- 19. What is the term for plankton that spend only part of their life cycle as part of the plankton community?
A) Meroplankton
B) Holoplankton
C) Bacterioplankton
D) Zooplankton
- 20. Which of the following is a type of phytoplankton that can produce bioluminescence?
A) Flatworms
B) Roundworms
C) Amoebas
D) Dinoflagellates
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