they are competing for sunlight
The biome you are referring to is likely the understory layer of a tropical rainforest. This layer is characterized by shorter trees and vines that have adapted to thrive in the low light conditions found beneath the dense canopy of tall trees in the rainforest.
Some examples of trees that tend to grow straight up include redwood trees, douglas firs, and poplar trees. These species have a natural tendency to grow tall and straight, making them popular choices for timber production and landscaping.
Trees grow tall primarily to compete for sunlight. By reaching higher in the canopy, trees can capture more sunlight for photosynthesis, which is essential for their growth and survival. Taller trees also have an advantage in dispersing their seeds over a wider area.
I believe Redwood trees can get up to about 300 feet tall.
Catalpa trees typically grow between 40-60 feet tall, but some can reach heights of up to 100 feet under ideal conditions. It depends on the specific species and environmental factors where the tree is planted.
Banana trees typically grow to be about 10 to 20 feet tall.
Avocado trees typically grow to be around 30 to 40 feet tall.
Cherry trees typically grow to be around 20 to 30 feet tall.
Nectarine trees typically grow to be around 12 to 15 feet tall.
Olive trees typically grow to be around 20 to 40 feet tall.
Orange trees typically grow to be around 20 to 30 feet tall.
Pomegranate trees typically grow to be around 12 to 20 feet tall.
mostly tall trees, shrubs, vines, tropical fruits, and tropical flowers
Commenalism
100 ft tall
Eucalyptus trees can grow up to 300 feet tall, making them some of the tallest trees in the world.
Hass avocado trees typically grow to be around 30 to 40 feet tall.