Animal Facts: Biologically Immortal?
Medium-difficulty multiple-choice quiz exploring the concept of biological immortality and the animal often linked to it.
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Quiz Questions & Answers
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Question 1: Which animal can revert its life cycle and is often called biologically immortal?
Turtle
Jellyfish (Turritopsis dohrnii)
Sea cucumber
Lobster
Question 2: What key biological process allows the immortal jellyfish to reset to an earlier life stage?
Transdifferentiation of mature cells
Complete DNA replacement
Spontaneous cloning
Hibernation-induced repair
Question 3: If the immortal jellyfish can return to a juvenile stage, which consequence is NOT accurate?
Individuals can avoid death from aging
Population dynamics still depend on habitat
It guarantees the species never dies out
Diseases and accidents can still kill them
Question 4: Which myth about the immortal jellyfish is most misleading?
Resetting is triggered by stress
Only one species shows this trait
They can reset to a juvenile polyp
They live forever under all conditions
Question 5: In a scenario where a population of immortal jellyfish faces a polluted bay, what likely outcome best reflects reality?
Population declines due to habitat stress despite reversals
All individuals immediately revert and thrive
Pollution makes them evolve into turtles
Population becomes infinite because individuals never age