Yes, because it attracts other fish that it eats
the heart
Help us to survive
No. The eye is an organ. Organelles are structures inside cells that perform a particular function.
They have special features like having a dormant phase, storage of carbohydrates etc. during loss of their leaves
A vestigial organ is one having no known use.
The capability to survive on its own.
Brain
there is no evidence that the human eye is an organ as we need organs to survive, if we didnt have an organ, we would eventually die, but people can live without eyes.
No it's your main organ and you need it to survive...
Okay! You made that name up...right???
The heart, the organ that sends blood throught your body so you can survive.
None that is a trick question because you can't survive without each one. I think you could survive without a reproductive system. It might not be a life worth living, but you'd survive.