Question

11. Name the four layers of soil? class 8


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Answer 1

Answer:

$\huge{ \underline{ \mathtt{ \red{ ☆A} \pink{N} \green{S} \blue{W} \purple{E} \orange{R}}}}$

Explanation:

Organic - The organic layer (also called the humus layer) is a thick layer of plant remains such as leaves and twigs.

Topsoil - Topsoil is considered the "A" horizon.

Subsoil - Subsoil is considered the "B" horizon. .

Parent material - The parent material layer is considered the "C" horizon.

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Answer 2

Answer:

Top Soil: Horizon A is the topmost layer. It contains soluble minerals and organic material (humus) from decayed plants and animals. These are needed for the growth of plants. Leaching of soil is common in this layer.

Horizon-B (Sub Soil): The layer below the topsoil in which sand, silt and clay are found is Horizon-B. It is also called the subsoil. This layer has more mineral content than horizon A but has very limited organic matter. Horizons A and B together form the true soil.

Horizon-C (Rock Fragments): Horizon C has small pieces of rocks. The true soil develops from these rock materials. These rocks are not affected by biological processes.

Horizon-D (Parent Rock): Horizon D has unbroken solid rock material lying below horizon C.