Q. No.
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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 |
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Level 1: 80%+
AIPMT - 2011
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Identify the correct statements:
Choose the correct answer from the options given below:
| A: | Detrivores perform fragmentation. |
| B: | The humus is further degraded by some microbes during mineralization. |
| 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 |
83%
Level 1: 80%+
NEET - 2023
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Detritivores breakdown detritus into smaller particles. This process is called:
| 1. Decomposition | 2. Catabolism |
| 3. Fragmentation | 4. Humification |
Subtopic: Decomposition |
80%
Level 1: 80%+
NEET - 2022
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Match the following and select the correct option:
| Column I | Column II | ||
| (a) | Earthworm | (i) | Pioneer species |
| (b) | Succession | (ii) | Detrivore |
| (c) | Ecosystem service | (iii) | Natality |
| (d) | Population growth | (iv) | Pollination |
1. A-(i), B-(ii), C-(iii), D-(iv)
2. A-(i), B-(ii), C-(iii), D-(iv)
3. A-(iii), B-(ii), C-(iv), D-(i)
4. A-(ii), B-(i), C-(iv), D-(iii)
Subtopic: Introduction | Decomposition | Ecosystem Services |
94%
Level 1: 80%+
AIPMT - 2014
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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 |
81%
Level 1: 80%+
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%
Level 1: 80%+
AIPMT - 2012
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Q.2 The process of mineralization by microorganisms helps in the release of
| 1. | inorganic nutrients from the humus |
| 2. | both organic and inorganic nutrients from detritus |
| 3. | organic nutrients from the humus |
| 4. | inorganic nutrients from detritus and formation of humus. |
Subtopic: Decomposition |
65%
Level 2: 60%+
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Given below are two statements
In light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
| Statement I: | The rate of decomposition is not related to chemical composition of detritus and climatic factors. |
| Statement II: | In a particular climatic condition, decomposition rate is faster if detritus is rich in lignin and chitin. |
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
Subtopic: Decomposition |
82%
Level 1: 80%+
NEET - 2024
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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 |
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Level 1: 80%+
NEET - 2022
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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 |
63%
Level 2: 60%+
NEET - 2022
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