Can any one organism in the food web be a consumer, an omnivore a predator and a pr Justify your answer?

All in 1 organism? Not really. It is where you draw the line. An omnivore can be a predator and prey, look at monkeys and human. But a consumer is not that possible. But if you count monkeys as prey for other monkeys, then they can be an predator, omnivore and a prey.