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