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Unusual Animal Migrations: Jellyfish Blooms - Quiz
  • 1. What ecological role do jellyfish blooms play?
A) They filter pollutants from water.
B) They eliminate oxygen from water.
C) They can provide food for certain species.
D) They act as predators to most fish.
  • 2. Which factor can lead to increased jellyfish populations?
A) Eutrophication
B) Cold water currents
C) Reduced salinity
D) High pH levels
  • 3. Where are jellyfish blooms most commonly observed?
A) High mountain streams
B) Open ocean
C) Freshwater lakes
D) Coastal areas
  • 4. Which of the following is a method to study jellyfish migration?
A) Radioactive tagging
B) Underwater sound monitoring
C) Satellite tracking
D) Airborne surveys
  • 5. Which region has reported significant jellyfish blooms?
A) Lake Baikal
B) The Arctic Ocean
C) The Black Sea
D) The Amazon River
  • 6. Why do jellyfish have a high reproductive potential?
A) They have a slow growth rate.
B) They require complex mating rituals.
C) They can reproduce both sexually and asexually.
D) They migrate during breeding season.
  • 7. What does the term 'medusa' refer to?
A) The larvae stage of jellyfish.
B) A type of jellyfish predator.
C) The mature, free-swimming stage of jellyfish.
D) The polyp stage of jellyfish.
  • 8. What adaptation helps jellyfish in open waters?
A) Their ability to drift with currents
B) Their ability to swim against strong currents
C) Their thick gelatinous bodies
D) Their strong propulsion ability
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