Excurrent trees are characterized by which growth pattern?

Excurrent trees are characterized by which growth pattern?

• A. Strong apical control with a central leader and cone-shaped crown
• B. Weak apical control with diffuse crown
• C. No apical control with multiple leaders
• D. Even, rounded crown with no dominant leader

Answer: (A)

Excurrent growth is driven by strong apical dominance, where the main shoot keeps most of the top growth during development. This keeps a single central leader and makes side branches grow more sparsely and upward, resulting in a cone- or pyramid-shaped crown. That’s why this option is the best match: it describes strong apical control with a central leader and a cone-shaped crown. If apical control were weak, the crown would be diffuse with many branches spreading in different directions. If there were no apical control and multiple leaders, the tree wouldn’t have a single dominant top. An even, rounded crown with no dominant leader describes a decurrent pattern, not excurrent.

Excurrent growth is driven by strong apical dominance, where the main shoot keeps most of the top growth during development. This keeps a single central leader and makes side branches grow more sparsely and upward, resulting in a cone- or pyramid-shaped crown. That’s why this option is the best match: it describes strong apical control with a central leader and a cone-shaped crown. If apical control were weak, the crown would be diffuse with many branches spreading in different directions. If there were no apical control and multiple leaders, the tree wouldn’t have a single dominant top. An even, rounded crown with no dominant leader describes a decurrent pattern, not excurrent.