The question seem to be incomplete but I found the complete question which is:
If you are performing this test on an unknown organism, why is it a good idea to run simultaneous tests on known phenylalanine-positive and phenylalanine-negative organisms?
Here is the Answer:
Inoculation of a positive control and success from it includes certainty to negative outcomes on an unknown organism. That is, you know the test is working effectively, so the negative outcome is most likely precise. Without the positive control, there is dependably a component of uncertainty whether the negative outcome is a genuine negative or a false negative. performing the test on a known phenlalanine-negative organism is valuable in that it exhibits what a negative outcome looks like.
Vampire squid can turn itself inside to prevent itself from predators.
It can also camouflage itself for the same
They use sensory filaments to find the food
Mimic octopus display white and black stripes.
It can mimic other aquatic creatures like flatfishes and lionfish to trick its predators
Toadfish possess light emitting cells
They make loud noises to call off the predators.
They also have venomous spines
Treehopper can camouflage in every type of environment of a forestland
