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Question

The given figure shows different layers of a forest labelled as W, X, Y and Z. Which layer is the habitat of many animal species like monkeys, orangutans, toucans and sloths as there is plenty of food available?
318972_6f192375647c4eac992cbc3d64daf618.png
  1. W
  2. X
  3. Y
  4. Z

A
Z
B
W
C
X
D
Y
Solution
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The ecosystem of a forest contains a diverse range of species which are present in the different strata of the forest. The emergent layer is at a greater height and can easily receive the sun rays. It is also known as the overstory. Animals found in this layer include birds, butterflies, small monkeys, bats, snakes and bugs. The canopy layer is the dense layer and much of the rain is stopped by the thick foliage. Most trees in the forest grow to this height and the habitat of the animal like birds, monkeys, frogs, and sloths, lizards, snakes and many insects. The understory layer has many vines, dense vegetation but not much sunlight as it is all blocked by the canopy and habitat of birds, butterflies, frogs and snakes. The forest floor layer is dark, damp, full of many dead leaves, twigs, and dead plants. It is usually clear of vegetation, with little or no winds and rains reaching there. The forest floor is dark due to the trees above stopping the sunlight from entering the forest. It is estimated that only 2% of the sunlight actually reaches the floor. Animals found in this layer include tigers and elephants in Asia. Hence, the correct answer is option B.

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