The layer of leaves that blocks most of the sunlight from reaching the ground in the rain forest is called the?

The layer of leaves that blocks most of the sunlight from reaching the ground in the rainforest is called the canopy. This upper layer is formed by the tops of tall trees and is crucial for the ecosystem, as it houses a diverse range of plant and animal species. The canopy plays a vital role in regulating the forest's temperature and humidity while providing a habitat for many organisms.