What happens to deciduous trees in the fall?

• A. They bear fruit
• B. They lose their leaves
• C. They change color
• D. They grow new branches

Answer: (B)

During the fall, deciduous trees undergo a significant transformation as part of their natural growth cycle. This period is characterized by the loss of leaves, which is a crucial process for these types of trees. As temperatures drop and daylight hours decrease, deciduous trees prepare for winter by shedding their leaves to conserve water and energy.

The process of losing leaves is essential because it helps the tree survive in colder conditions where water may be less available due to freezing temperatures. By dropping leaves, the tree reduces its surface area and minimizes water loss through transpiration. This adaptation is vital for their survival during the harsh winter months when they cannot photosynthesize effectively.

While it is true that many deciduous trees also change color in the fall before losing their leaves, the primary and most definitive action that occurs is leaf abscission—the process of losing leaves. Therefore, focusing on the main event that occurs in this seasonal transition strengthens the understanding of how deciduous trees adapt to their environment.