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