A thick back helps to limit moisture evaporation
from the tree's trunk in drier, temperate deciduous forests. The smoothness of the back might also make it difficult for some
other plants to grow on their surface. Most trees have a think, smooth bark since the tropical rainforests have high humidity,
which is not a concern for that particular region.
Lianas are climbing woody vines that drape rainforest
trees. They have adapted to life in the rainforest by having their roots in the ground and climbing high into the tree canopy
in order to reach the available sunlight. Quite a lot of lianas start life in the rainforest canopy and send roots down to
3. Drip Tips
The leaves of the rainforests have adapted to
overcome with extremely high rainfall. . Many tropical rainforest leaves have a drip tip. It is thought that these drip trips
enable raindrops to run off quickly. Plant need to shed water to avoid the growth of bacteria and fungus in the warm, wet
Many large trees have massive ridges near the
base that can rise 30 feet high before blending into the trunk. Buttress roots provide extra stability, especially since roots
of tropical rainforest trees are not typically as deep as compared to those of trees in temperate zones.
5. Prop and Stilt Roots
Prop and stilt roots help give support and are
characteristic of tropical palms growing in shallow, wet soils. Although the tree grows slowly, these aboveground roots can
grow 28 inches a month.
Epiphytes are plants that live on the surface of other plants, especially
the trunk and branches. They grow on trees to take advantage of the sunlight in the canopy. Most are orchids, bromeliads,
ferns, and Philodendron relatives. There are tiny plants called epiphylls, mostly mosses, liverworts, and lichens that
live on the surface of leaves.
Bromeliads are found in the Americas. Some of them grow in the ground, such as pineapple,
but most species grow on the branches of trees. Their leaves form a vase or tank that holds water. Small roots anchor plants
to supporting branches and their broad leaf bases form a water-holding tank or cup. The tanks support a thriving eco-system
of bacteria, protozoa, tiny crustaceans, mosquito and dragonfly larvae, birds, tadpoles, salamanders and frogs. The
tank's capacity ranges from half a pint to 12 gallons or more.