What do we call the upper leaves of a forest?

The upper leaves of a forest are referred to as the canopy. This term describes the upper layer formed by the crowns of tall trees, which creates a protective cover over the layers below. The canopy plays a crucial role in the forest ecosystem, as it absorbs a significant amount of sunlight, influencing the microclimate below and serving as a habitat for various wildlife species, including birds and insects.

Furthermore, the canopy is essential for photosynthesis, as it is where most of the tree foliage is located, allowing for maximum light interception. This upper layer also helps to retain moisture and regulate temperatures within the forest, creating a habitat for diverse flora and fauna.

The other choices represent different layers or areas within a forest structure. The understory refers to the layer beneath the canopy where smaller trees and shrubs grow. The forest floor is the lowest layer, consisting of soil, decomposing leaves, and other organic matter. The subcanopy is the layer just below the canopy that includes younger trees and smaller trees that are not yet tall enough to reach the canopy. These distinctions are important in understanding forest ecology and the various roles each layer plays in the ecosystem.