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Question

Emergent layer, canopy, understorey and forest floor are the four distinct layers of ___________.

A
natural vegetation.
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B
natural river
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C
natural forest
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D
none of these
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Solution

The correct option is A natural vegetation.

Tropical rainforests or Natural forest have four layers:

Emergent Layer: These giant trees thrust above the dense canopy layer and have huge mushroom-shaped crowns.

Canopy Layer: The broad, irregular crowns of these trees form a tight, continuous canopy 60 to 90 feet above the ground.

Understory: Receiving only 2-15% of the sunlight that falls on the canopy, the understory is a dark place. It is relatively open and contains young trees and leafy herbaceous plants that tolerate low light. Many popular house plants come from this layer.

Forest Floor: The forest floor receives less than 2% of the sunlight and consequently, little grows here except plants adapted to very low light.


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