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Q. No.Subtopic: Introduction |
76%
From NCERT
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Hints
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: Energy Flow | Ecological Pyramids |
66%
From NCERT
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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
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) |
Please attempt this question first.
Hints
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: Energy Flow |
91%
From NCERT
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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
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
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
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%
Please attempt this question first.
Hints
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: 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
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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NEET 2025 - Target Batch
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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
Subtopic: Ecological Succession (OLD NCERT) |
87%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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