MHT CET 202623 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 23 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Ecosystem
MHT CET 2026 · 23 April · Evening Shift · Biology · Ecosystem
Identify the correct sequence of processes in the decomposition of...
Identify the correct sequence of processes in the decomposition of organic matter.
A. Humification
B. Fragmentation
C. Catabolism
D. Leaching
A. Humification
B. Fragmentation
C. Catabolism
D. Leaching
Options
- AA \rightarrow B \rightarrow C \rightarrow D
- BB \rightarrow C \rightarrow A \rightarrow D
- CC \rightarrow B \rightarrow D \rightarrow A
- DB \rightarrow D \rightarrow C \rightarrow A
Correct answer
D. B \rightarrow D \rightarrow C \rightarrow A
Step-by-step solution
Decomposition of organic matter involves the following steps in sequence:
Fragmentation: Breakdown of detritus into smaller particles by detritivores.
Leaching: Water-soluble inorganic nutrients seep into the soil horizon and precipitate as unavailable salts.
Catabolism: Degradation of detritus into simpler inorganic substances by bacterial and fungal enzymes.
Humification: Accumulation of a dark-coloured amorphous substance called humus.
Mineralisation: Further degradation of humus by microbes to release inorganic nutrients.
The correct sequence is Fragmentation \rightarrow Leaching \rightarrow Catabolism \rightarrow Humification, which corresponds to B \rightarrow D \rightarrow C \rightarrow A.
Answer: B \rightarrow D \rightarrow C \rightarrow A
Fragmentation: Breakdown of detritus into smaller particles by detritivores.
Leaching: Water-soluble inorganic nutrients seep into the soil horizon and precipitate as unavailable salts.
Catabolism: Degradation of detritus into simpler inorganic substances by bacterial and fungal enzymes.
Humification: Accumulation of a dark-coloured amorphous substance called humus.
Mineralisation: Further degradation of humus by microbes to release inorganic nutrients.
The correct sequence is Fragmentation \rightarrow Leaching \rightarrow Catabolism \rightarrow Humification, which corresponds to B \rightarrow D \rightarrow C \rightarrow A.
Answer: B \rightarrow D \rightarrow C \rightarrow A