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