In this lesson we are going to discuss the tropical rainforest vegetation, where it is found and its uses
Vegetation Zones of theWorldA. ForestsA forest is a continuousgrowth of trees andundergrowths covering largetracts of land.1. Tropical Rain Forests- Known as Selvas in S.America.It’s found in the followingareas:1. Congo Basin2. Amazon Basin3. Western sides of India,Burma and Vietnam.4. Coastal land of QueenslandAustralia.Characteristics• Closely set trees with threedistinct canopies.• There is less undergrowth onthe forest floor due to lightbeing obstructed by canopies.• Trees take long time togrow.• Trees have large trunks withbuttress roots (radiating walllike roots).• Trees have broad leaves toincrease the surface area forefficient transpiration due tohigh precipitation.• There is varied number ofplants species over a smallportion.• Trees are tall, have smoothstems and straight trunks.• Some trees are evergreenshedding a few leaves at atime while others shed leavesand are left bare.• Some trees are very heavyand don’t float on water.• Trees take very long time tomature between 70-100years.Types of trees present aremahogany, ebony, ironwood,rose wood, camphor andSapele.Tree creepets and parasites arefound around tall main trees.Uses of tropical rain Forests(a) Trees are valuable sourcesof timber for furniture,building and construction.(b) Oil palms are forproduction of palm oil.(c) Cacao crops for productionof cocoa beans used to makecocoa used to make chocolatesand beverages.(d) Chicle from the bark ofZabote tree is used to makechewing gum.(e) Ivory nuts are used formaking buttons.(f) Fibres from torquilla palmare used for making hats,mats, baskets and thatchingmaterials.(g) Cinchona tree’s barkcontains quinine used inmalarial treatment.