Question

Arrange the following steps of decomposition in the correct order of their sequence:
(A) Humification
(B) Fecal Matter
(C) Leaching
(D) Mineralisation

• A. (A), (C), (B), (D)
• B. (D), (B), (A), (C)
• C. (B), (C), (A), (D)
• D. (A), (D), (C), (B)

Answer 1

The Correct Option is C

The correct sequence of decomposition steps involves several stages, starting from the breakdown of organic matter and progressing toward nutrient recycling. Here's the breakdown of the steps:

(B) Fecal Matter: Decomposition begins with the breakdown of organic matter, including fecal matter, which provides a starting point for microbial activity.

(C) Leaching: This step involves the washing away of soluble nutrients and minerals from the decomposing matter by water. These nutrients are transported into the soil.

(A) Humification: In this stage, the organic matter is partially decomposed to form humus, which is rich in nutrients and contributes to the soil's fertility.

(D) Mineralisation: The final step in decomposition is mineralisation, where the organic nutrients in humus are broken down into simple inorganic substances (like minerals) that can be used by plants.

Thus, the correct order is:

(B) Fecal Matter, (C) Leaching, (A) Humification, (D) Mineralisation.

Correct answer: (3) (B), (C), (A), (D).

Answer 2

The correct sequence is: (B) Fecal Matter, (C) Leaching, (A) Humification, and (D) Mineralisation. Decomposition starts with the breakdown of organic matter, followed by leaching, humification, and finally mineralization.