mimicry is a device for

1. cocealing from predator
2. cocealing from prey
3. both (1) &(2)

The correct answer is 3.
Mimicry is related to camouflage, in which a species resembles its surroundings or is otherwise difficult to detect. In particular, mimesis, in which the mimic takes on the properties of a specific object or organism, but one to which the dupe is indifferent, is an area of overlap between camouflage and mimicry. For example, animals such as flower mantises, planthoppers and geometer moth caterpillars that resemble twigs, bark, leaves or flowers are mimetic. Crypsis (in the broad sense) is sometimes used to encompass all forms of avoiding detection, such as mimicry, camouflage and hiding.