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