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