Because the leaves and branches of the top layer block sunlight from reaching the bottom layer.
Mangoes typically grow in the understory layer of the rainforest where there is diffused sunlight. They can also be found in the canopy layer if they receive enough light.
The uppermost layer called the emergent layer receives the most sunlight in the tropical rainforest. This layer consists of the tallest trees that rise above the canopy, allowing them to receive direct sunlight throughout the day.
If the bottom layer leaves are small, the would receive lesser sunlight. The top layer leaves are smaller than the bottom layer leaves in size as they can receive more sunlight, thus the bottom layer leaves are larger in size to have a bigger surface area to trap more sunlight. Hope this can help you. '~'
The emergent layer of the rainforest gets the most sunlight. Its trees are the tallest and are often exposed to direct sunlight, which allows them to receive abundant light for photosynthesis.
The Mango tree typically grows in the understory layer of the rainforest. This layer is below the canopy and consists of smaller trees and shrubs that receive less direct sunlight.
The Canopy layer
The most.
Bottom Layer
Moss is commonly found in the understory layer of the rainforest, which is the layer below the canopy where there is less sunlight and more moisture. Moss thrives in these conditions due to the high humidity levels and reduced sunlight.
The king fern typically grows in the understory layer of the rainforest. This layer is beneath the canopy layer and consists of smaller trees, shrubs, and plants that receive filtered sunlight. King ferns thrive in the shaded, humid conditions of the rainforest understory.
The bottom layer of the rainforest is called the forest floor. It is dark, damp, and covered with fallen leaves, twigs, and dead plant material. Many insects, fungi, and small animals live in this layer.
The layer of leaves that blocks most of the sunlight from reaching the ground in the rainforest is called the canopy layer. This dense layer of vegetation helps regulate temperature and humidity levels in the rainforest ecosystem.