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