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