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