Identify the correct Statements :
 
A. Detrivores perform fragmentation.
B. The humus is further degraded by some microbes during mineranlization.
C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
D. The detritus food chain begins with living organisms.
E. Earthworms break down detritus into smaller particles by a process called catabolism.

Choose the correct answer from the options given below :
1. D, E, A only  2. A, B, C only
3. B, C, D only  4. C, D, E only
Subtopic:  Decomposition |
 81%
From NCERT
NEET - 2023
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Given below are two statements:
 
Statement I: Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.

In light of the above statements, choose the correct answer from the options given below: 
 
1. Statement I is correct incorrect but statement II is correct.
2. Both statement I and II are correct.
3. Both statement I and statement II are incorrect.
4. Statement I is correct but statement II is incorrect. 
Subtopic:  Decomposition |
 72%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Detritivores breakdown detritus into smaller particles. This process is called:
1. Decomposition 2. Catabolism
3. Fragmentation 4. Humification
Subtopic:  Decomposition |
 77%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Identify the correct set of statements with regard to the properties of humus.

(a) Highly resistant to microbial action 
(b) Dark-colored amorphous substance 
(c) End product of detritus food chain 
(d) Reservoir of nutrients 
(e) Undergoes decomposition very fast 


Choose the correct answer from the options given below:
1. (a), (b), and (d) only 
2. (a),(b) and (e) only 
3. (a) and (b) only 
4. (b), (c), and (a)

Subtopic:  Decomposition |
 81%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following is not correct regarding the decomposition of wastes? 

(a) Low temperature inhibits decomposition
(b) Warm and moist environment favors the process 
(c) The process is anaerobic 
(d) It is slower if detritus is rich in proteins and carbohydrates 
(e) Detritus is degraded into simpler inorganic substance by fungal and bacterial enzymes 

Choose the correct answer from the options given below: 

1. (b) and (c) only  2. (c) (a) and (d) only 
3. (c) and (d) only 4. (c) (d) and (e) only
Subtopic:  Decomposition |
 60%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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The rate of decomposition is faster in the ecosystem due to the following factors EXCEPT:

1. Detritus rich in sugars

2. Warm and moist environment

3. Presence of aerobic soil microbes

4. Detritus richer in lignin and chitin

Subtopic:  Decomposition |
 79%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following processes during decomposition is correctly described?

1. Humanification-Leads to the accumulation of a dark-coloured substance in humans which undergoes microbial action at a very fast rate
2. Catabolism-Last step decomposition under fully anaerobic condition
3. Leaching-Water soluble inorganic nutrients rise to the top layers of the soil
4. Fragmentation-Carried out by organisms such as earthworms

Subtopic:  Decomposition |
 78%
From NCERT
AIPMT - 2013
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Pheretima and its close relatives derive nourishment from:

1. Sugarcane roots

2. Decaying fallen leaves and soil organic matter

3. Soil insects

4. Small pieces of fresh fallen leaves of maize

Subtopic:  Decomposition |
 88%
From NCERT
AIPMT - 2012
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The breakdown of detritus into smaller particles by earthworm is a process called:
1. Catabolism
2. Humification
3. Fragmentation
4. Mineralisation

Subtopic:  Decomposition |
 92%
From NCERT
AIPMT - 2011
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NEET 2023 - Target Batch - Aryan Raj Singh
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