Aliivibrio Fischeri Symbionts Benefit the Hawaiian Bobtail Squid By

Question

Aliivibrio fischeri symbionts benefit the Hawaiian bobtail squid by
A) mimicking the light of the moon, which helps the squid avoid nocturnal predators.
B) providing essential amino acids missing from the squidʹs diet.
C) degrading the cellulosic cell walls of the phytoplankton the squid eats.
D) providing essential amino acids missing from the squidʹs diet and degrading the cellulosic cell walls of the phytoplankton the squid eats.

Accepted Answer

Aliivibrio fischeri symbionts are bioluminescent bacteria that colonize the light organ on the underside of the squid. The bacteria produce light, which the squid uses to mimic the moonlight and avoid predation by nocturnal predators.