Some marine animals and insects emit light from their body in darkness. This phenomenon is known as

Correct answer: (b) Bioluminescence

Explanation

Bioluminescence is the emission of light by living organisms like fireflies, jellyfish and deep-sea fish through a chemical reaction.

It is a form of chemiluminescence producing a cold light, where under 20% of energy becomes heat.

Phosphorescence needs prior exposure to external radiation and glows as an afterglow, so it is not body-produced living light.