Q. Which of the following marine species can show biofluorescence?:
1.Sea Turtle
2.Sharks
3.Corals
Select the correct answer from the codes given below:

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: D
Notes:

All of the given species show biofluroescence.

  • Corals: Corals make so much of one particular protein which causes them to be fluorescent. This composes 15% of the protein in corals. Corals could use biofluorescence as an attractant for microbeswith whom they have a symbiotic relationship — microbes have very good photoreceptors and can see different colours. So, this could be a great way to signal microbes to inhabit corals.
  • Fishes: Fishes use biofluorescence as camouflage or to call to other fish with the same phenomena.
    • Shark: The molecule causing fluorescence in sharks is an anti-microbial. So, nothing will ever grow on these sharks, even if they just sit at the bottom of the sea.
  • Sea turtle: Biofluorescence has also been found in a sea turtle.

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