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