Match List I with List II
List I List II
A. Lichens I. Pioneer species
B. Invade bare area II. Hydrosere
C. Reed swamp stage III. Final stable community
D. Climax IV. Lithosere
Choose the correct answer from the options given below:
1. A-IV, B-I, C-II, D-III
2. A-IV, B-II, C-I, D-III
3. A-III, B-IV, C-I, D-II
4. A-II, B-I, C-IV, D-III
 

Subtopic:  Ecological Succession (OLD NCERT) |
 79%
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The term "Ecosystem" was proposed by
1.  E.P. Odum
2.  A.G. Tansley
3.  E. Haeckel
4.  R. Mishra
Subtopic:  Introduction |
 76%
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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
Subtopic:  Energy Flow | Ecological Pyramids |
 66%
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Terrestrial life evolved from aquatic life due to
1.  Development of extra-embryonic membranes
2.  Development of glandular skin
3.  Modification of appendages into limbs
4.  High body temperature
Subtopic:  Ecological Succession (OLD NCERT) |
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Given below are two statements
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:  Energy Flow |
 91%
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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:
1. A. B, C & D only
2. B, C, D & E only
3. B, C & D only
4. A, C & E only 
Subtopic:  Decomposition |
 61%
From NCERT
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Which of the following statements are correct with respect to ecological pyramids?
A. The base of each pyramid represents the producers or the first tropic level while the apex represents tertiary or top-level consumer
B. The pyramid of energy is always upright
C. A given species can occupy only one trophic level in the same ecosystem at the same time
D. The pyramid of number in tree ecosystem is upright

Choose the correct answer from the options given below:
1. A,B,C only
2. A,C,D,E only
3. B,D only
4. A,B,E only
Subtopic:  Ecological Pyramids |
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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 
Subtopic:  Energy Flow | Ecological Flow |
 60%
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Match List I with List II 
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:  Energy Flow |
 90%
From NCERT
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The pioneer species in a hydrarch succession are :
1. Free-floating angiosperms
2. Submerged rooted plants
3. Phytoplanktons
4. Filamentous algae
Subtopic:  Ecological Succession (OLD NCERT) |
 82%
From NCERT
NEET - 2022
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