The property of living organism to emit light by bioluminescence is exhibited by
A
Ctenoplane
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B
Pennatula
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C
Meandrina
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D
Physalia
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Solution
The correct option is A
Ctenoplane
Bioluminescence is the property of a living organism to emit light.
It is a type of chemiluminescence.
The chemical reaction in such organisms involves some light-emitting molecule called luciferin and an enzyme called luciferase.
Bioluminescence is mostly seen in a marine vertebrate and invertebrate animal, few fungi, bioluminescent bacteria and terrestrial invertebrates (fireflies).
Ctenoplana is a genus of comb jellies which are transparent or colourless organisms belonging to the phylum Ctenophora.
They exhibit the property of bioluminescence.
It is caused by the activation of calcium-activated proteins named photoproteins in cells called photocytes in these organisms.