Subtopic: Â Introduction |
 70%
Level 2: 60%+
Please attempt this question first.
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Choose the correct statements
A. Length of the food chain is generally limited to 3-4 trophic levels due to energy loss.
B. Length of food chain depends upon the producer
C. In hydrarch succession, lichen is the pioneer community
D. Removal of most of the carnivores in an ecosystem results in an increased population of deer
E. Removal of 80% of top carnivores results in greatly increased growth of vegetation
Choose the correct answer from the options given below
1. A, B and C only
2. C, D and E only
3. A, D and E only
4. A, B and D only
A. Length of the food chain is generally limited to 3-4 trophic levels due to energy loss.
B. Length of food chain depends upon the producer
C. In hydrarch succession, lichen is the pioneer community
D. Removal of most of the carnivores in an ecosystem results in an increased population of deer
E. Removal of 80% of top carnivores results in greatly increased growth of vegetation
Choose the correct answer from the options given below
1. A, B and C only
2. C, D and E only
3. A, D and E only
4. A, B and D only
Subtopic: Â Energy Flow |Â Ecological Pyramids |
 66%
Level 2: 60%+
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Given below are two statements
In light of the above statements, choose the most appropriate answer from the options given below
1. Both statement I and statement II are correct
2. Both statement I and statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but statement II is correct
| Statement I: | The pyramid of energy is always upright, can never be inverted |
| Statement II: | When energy flows from one trophic level to next trophic level, some energy is always lost as heat |
In light of the above statements, choose the most appropriate answer from the options given below
1. Both statement I and statement II are correct
2. Both statement I and statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but statement II is correct
Subtopic: Â Energy Flow |
 92%
Level 1: 80%+
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Decomposition
A. is favored by warm and dry environment
B. gives rise to humus and inorganic nutrients
C. is dependent on oxygen availability
D. involves fragmentation, catabolism and leaching
E. is faster when detritus is low in nitrogen and sugars
Choose the correct answer from the options given below:
A. is favored by warm and dry environment
B. gives rise to humus and inorganic nutrients
C. is dependent on oxygen availability
D. involves fragmentation, catabolism and leaching
E. is faster when detritus is low in nitrogen and sugars
Choose the correct answer from the options given below:
| 1. | A, B, C & D only | 2. | B, C, D & E only |
| 3. | B, C & D only | 4. | A, C & E only |
Subtopic: Â Decomposition |
 60%
Level 2: 60%+
Please attempt this question first.
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Please attempt this question first.
Arrange the following in an order, starting from first trophic level
A. Cyclops
B. Spirogyra
C. Catfish
D. Pelican
E. Small fish
Choose the correct answer from the options given below
1. A, B, C, D, E
2. B, A, C, D, E
3. B, A, E, C, D
4. B, A, E, D, C
A. Cyclops
B. Spirogyra
C. Catfish
D. Pelican
E. Small fish
Choose the correct answer from the options given below
1. A, B, C, D, E
2. B, A, C, D, E
3. B, A, E, C, D
4. B, A, E, D, C
Subtopic: Â Energy Flow |Â Ecological Flow |
 63%
Level 2: 60%+
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Match List I with List II
Choose the correct answer from the options given below:
1. A-III, B-I, C-IV, D-II
2. A-II, B-I, C-IV, D-III
3. A-II, B-III, C-I, D-IV
4. A-III, B-II, C-IV, D-I
| List I | List II |
| A. Primary consumers | I. Top carnivore |
| B. Tertiary consumers | II. Herbivore |
| C. Producers | III. Carnivore |
| D. Secondary consumers | IV. Plants |
Choose the correct answer from the options given below:
1. A-III, B-I, C-IV, D-II
2. A-II, B-I, C-IV, D-III
3. A-II, B-III, C-I, D-IV
4. A-III, B-II, C-IV, D-I
Subtopic: Â Energy Flow |
 89%
Level 1: 80%+
Please attempt this question first.
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Please attempt this question first.
The pioneer species in a hydrarch succession are :
1. Free-floating angiosperms
2. Submerged rooted plants
3. Phytoplanktons
4. Filamentous algae
1. Free-floating angiosperms
2. Submerged rooted plants
3. Phytoplanktons
4. Filamentous algae
 81%
Level 1: 80%+
NEET - 2022
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The species that come to appear in bare area are called:
1. Pioneer species
2. Invasive species
3. Competitive species
4. Species of seral community
1. Pioneer species
2. Invasive species
3. Competitive species
4. Species of seral community
 86%
Level 1: 80%+
NEET - 2022
Hints
All successions irrespective of the habitat proceed to which type of climax community ?
1. Xeric
2. Mesic
3. Hydrophytic
4. Edaphic
1. Xeric
2. Mesic
3. Hydrophytic
4. Edaphic
 80%
Level 1: 80%+
NEET - 2022
Hints
Frugivorous birds are found in large numbers in tropical forests mainly because of :
1. lack of niche specialisation.
2. higher annual rainfall.
3. availability of fruits throughout the year.
4. temperature conducive for their breeding.
1. lack of niche specialisation.
2. higher annual rainfall.
3. availability of fruits throughout the year.
4. temperature conducive for their breeding.
Subtopic: Â Components & Types of Ecosystems |Â Ecosystem Productivity |
 69%
Level 2: 60%+
NEET - 2022
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