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Q. No.An inverted Pyramid of biomass is represented by:
1. Aquatic ecosystem
2. Ecosystem of a big tree
3. Grassland ecosystem
4. Tropical fresh ecosystem
Subtopic: Introduction | Ecosystem Productivity |
74%
From NCERT
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The primary productivity in an ecosystem is expressed as:
1. \(\text {gm}^{-2}~ \text { yr}^{-1}\)
2. \(\text {gm}^{-2}~ \text { yr}\)
3. \(\text {kcal m}^{-2}~ \text { yr}^{-1}\)
4. \(\text {kcal}{}~ \text { m}^{-2}\)
1. \(\text {gm}^{-2}~ \text { yr}^{-1}\)
2. \(\text {gm}^{-2}~ \text { yr}\)
3. \(\text {kcal m}^{-2}~ \text { yr}^{-1}\)
4. \(\text {kcal}{}~ \text { m}^{-2}\)
Subtopic: Ecosystem Productivity |
From NCERT
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Assertion(A): Decomposition process is slower if detritus is rich in lignin and chitin
Reason(R): Decomposition is largely an oxygen requiring process
Reason(R): Decomposition is largely an oxygen requiring process
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A) |
| 3. | (A) is true, but (R) is false |
| 4. | (A) is false, but (R) is true |
Subtopic: Decomposition |
68%
From NCERT
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Arrange these in successive levels of biological organisation from microlevel to global scale
A. Biosphere
B. Communities
C. Atoms
D. Organs
E. Cells
Choose the correct answer from the options given below
1. C, E, D, B, A
2. C, A, E, D, B
3. A, B, D, C, E
4. A, B, C, E, D
A. Biosphere
B. Communities
C. Atoms
D. Organs
E. Cells
Choose the correct answer from the options given below
1. C, E, D, B, A
2. C, A, E, D, B
3. A, B, D, C, E
4. A, B, C, E, D
Subtopic: Introduction |
81%
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The presence of diversity at the junction of territories to two different habitats is known as?
1. bottleneck effect
2. edge effect
3. junction effect
4. Pasteur effect
1. bottleneck effect
2. edge effect
3. junction effect
4. Pasteur effect
Subtopic: Components & Types of Ecosystems |
74%
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The presence of diversity at the junction of territories of two different habitats is known as?
1. bottleneck effect
2. edge effect
3. junction effect
4. Pasteur effect
1. bottleneck effect
2. edge effect
3. junction effect
4. Pasteur effect
Subtopic: Components & Types of Ecosystems |
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Subtopic: Decomposition |
74%
From NCERT
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Lichen is the pioneer vegetation on which succession?
1. Hydrosere
2. Lithosere
3. Psammosere
4. Xerosere
1. Hydrosere
2. Lithosere
3. Psammosere
4. Xerosere
Subtopic: Ecological Succession (OLD NCERT) |
From NCERT
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Plants obtain phosphorus from soil and . herbivores obtain the same from
1. Plants
2. Atmosphere
3. Soil only
4. Rocks
1. Plants
2. Atmosphere
3. Soil only
4. Rocks
Subtopic: Mineral Cycling & Ecosystem Services (OLD NCERT) |
72%
From NCERT
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The rate of release of nutrients into the atmosphere is regulated by
(a) pH
(b) Moisture
(c) Temperature
(d) Soil
1. Only c and d
2. Only d .
3. Only band c
4. All a, b, c and d
(a) pH
(b) Moisture
(c) Temperature
(d) Soil
1. Only c and d
2. Only d .
3. Only band c
4. All a, b, c and d
Subtopic: Mineral Cycling & Ecosystem Services (OLD NCERT) |
81%
From NCERT
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