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