Fact not true about octopuses
XAT 2026 · General Knowledge · Easy · General Knowledge
Which of the following is NOT true about octopuses?
- A.
Their blood emits a radium-like glow under moonlight.
- B.
They have three hearts.
- C.
They can eject a cloud of ink which creates smoke-screen effect, to escape predators.
- D.
They usually have a lifespan of around 1-5 years.
- E.
They can regrow their lost arms.
Answer
A
Explanation
Octopus blood is blue due to hemocyanin, but it does NOT emit a radium-like glow under moonlight. All other statements are biologically true.
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