Question

Humus is
A) A mixture of clay sand and loam
B) Heavy soil with mineral salts
C) Organic matter of colloidal size
D) Light soil with lime

Answer 1

Answer:

Humus is Organic matter of colloidal size. Humus is created by the microbial breakdown of compounds found in plants and animals. It is a colloid of small particles with long carbon chains.

Explanation:

• An illustration of an organic colloidal is humus. Organic colloids are minute fragments of organic substance that have a low or no rate of disintegration.
• Because colloids and soil particles differ, so do they. While some colloids are formed of biological materials, others are built of minerals.
• Typically, the mineral colloids are fine clay or crystalloid particles.
• Various types of soil colloids include:
• 1. Crystalloids made of crystalline silicate clays
• 2. Clays made of non-crystalline silicates
• 3. Oxides of iron and aluminium
• 4. Organic colloids (humus) Because it keeps the soil moist, humus plays a crucial role in the growth and development of plants.

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Answer 2

Option (c) is the correct answer

Humus is Organic matter of colloidal size

Explanation:

• The microbial breakdown of compounds found in plants and animals are created by Humus.

• Humus is a colloid made up of small particles with long carbon chains.

• It is an illustration of an organic colloidal.

• These organic colloids are minute fragments made up of organic substance which are having a low or no rate of disintegration.
• Soil particles and colloids differ in each other.
• Colloids are made up of biological materials, which are built of minerals.
• It is the mineral colloids which are made up of fine clay or crystalloid particles.
• Humus helps to keep the soil moist and it plays a crucial role in the growth and development of plants.

Different types of soil colloids are as of following types

1. Crystalloids made of crystalline silicate clays

2. Clays made of non-crystalline silicates

3. Oxides of iron and aluminum

4. Organic colloids (humus)

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