Because rapid bacterial decay prevents the accumulation of humus. 6. How do the soils in tropical deciduous forest differ from the soils in tropical rainforest? The soil in tdf has more nutrients, because the leaves fall down and trees grow more sparsely. 7. Describe the layers of tropical rainforest. Emergents forest giants, the trees there are 50m or more. Canopy a dence layer, the trees there are 20-30m. There can be found many hardwoods, such as mahagony. Understory a dark and a humid area, contains saplings between the trunks of larger trees. 8. How does the vegetation in tropical deciduous forest differ from the vegetation in tropical rainforest? Trf has more kinds of trees than tdc. About 70% of the plants in trf are trees. 9. Using the picture (given in the test) describe how a plant is adapted to the life in tropical rainforest? Epiphytes, liana, climbers or stranglers. 10. What is an epiphyte
They are mostly found at lowlands near the equator - Asia, Africa, South & Central America and on many of the Pacific Islands. Almost 50% forests of the world are tropical and subtropical in nature. Rainforests are characterized by high rainfall. They are home to two-thirds of all the living animal and plant species on the planet. Tall, broad-leaved evergreen trees are the dominant plants, forming a leafy canopy over the forest floor. The undergrowth or understory in a rainforest generally consists of shade-tolerant shrubs, herbs, ferns, small trees and large woody vines. The temperature ranges from 5°C to 50°C. Human uses of tropical and subtropical forests: o Habitation - Humans have and do exploit rainforests for food and shelter in several parts of the world. o Cultivated foods and spices - Coffee, chocolate, bananas etc
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