What are the layers of tropical rain forest in order from tallest to shortest?

The layers of a tropical rainforest from tallest to shortest are: emergent layer, canopy layer, understory layer, and forest floor. The emergent layer consists of the tallest trees that rise above the canopy, which is a dense layer of foliage that filters sunlight. The understory is a darker, more shaded layer beneath the canopy, and the forest floor is the lowest layer where decaying plant matter is found.