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Q. No.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%
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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
Subtopic: Ecological Succession (OLD NCERT) |
87%
From NCERT
NEET - 2022
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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
Subtopic: Ecological Succession (OLD NCERT) |
81%
From NCERT
NEET - 2022
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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: Components & Types of Ecosystems | Ecosystem Productivity |
67%
NEET - 2022
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Match the List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Carbon dissolved in oceans | (i) | 55 billion tons |
| (b) | Annual fixation of carbon through photosynthesis | (ii) | 71% |
| (c) | PAR captured by plants | (iii) | \(4 \times 10^3 \)kg |
| (d) | Productivity of oceans | (iv) | 2 to 10% |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (iii) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (ii) | (iii) | (iv) | (i) |
| 4. | (iii) | (ii) | (i) | (iv) |
Subtopic: Ecosystem Productivity | Mineral Cycling & Ecosystem Services (OLD NCERT) |
85%
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NEET - 2022
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The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called:
1. Secondary production
2. Primary production
3. Gross primary production
4. Net primary production
1. Secondary production
2. Primary production
3. Gross primary production
4. Net primary production
Subtopic: Ecosystem Productivity |
57%
From NCERT
NEET - 2022
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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: Energy Flow |
89%
From NCERT
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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 |
61%
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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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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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