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