3. The of the tree receives maximum sunlight.
Answers
Answer:
Trees use energy from the sun to create sugars through a process called photosynthesis and without these sugars as an energy source a tree cannot grow or ultimately survive. A study by Thomas Givnish found that the process of photosynthesis is directly impacted by the amount of sunlight that hits a tree's leave. Trees compete for sun exposure and some species will ultimately be shaded by others, causing the shaded species to decrease photosynthesis rates due to less availability of sunlight. In another study, led by Rafael de Casas, researchers found that photosynthetic processes have a large effect on what a tree crown looks like. These researchers found that leaves along the outer regions of a tree crown get more sun and are larger. This distribution creates a layered affect within the tree crown giving it its distinct shape. Having a decrease in photosynthetic processes can be hazardous to multiple structures of the tree causing tree shape to change.
Step-by-step explanation:
In botany, a tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are some three trillion mature trees in the world.[1]