Q. No.Subtopic: Ecological Pyramids |
From NCERT
AIPMT - 2012
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Which of the following statements is incorrect?
| 1. | Biomass decreases from first to fourth trophic level. |
| 2. | Energy content gradually increases from first to fourth trophic level. |
| 3. | Number of individuals decreases from first trophic level to fourth trophic level. |
| 4. | Energy content gradually decreases from first to fourth trophic level. |
Subtopic: Ecological Pyramids |
84%
From NCERT
NEET - 2020
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Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
| 1. | Level PC is insects and level SC is small insectivorous birds |
| 2. | Level PP is phytoplanktons in the sea and Whale on top-level TC |
| 3. | Level PP is pipal trees and the level SC is sheep |
| 4. | Level PC is rats and level SC is cats |
Subtopic: Ecological Pyramids |
54%
From NCERT
AIPMT - 2012
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What type of ecological pyramid would be obtained with the following data?
Secondary consumer: 120 g
Primary consumer: 60 g
Primary producer: 10 g
1. Inverted pyramid of biomass
2. Pyramid of energy
3. Upright pyramid of numbers
4. Upright pyramid of biomass
Subtopic: Ecological Pyramids |
85%
From NCERT
NEET - 2018
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Which of the following statements is not correct?
| 1. | Pyramid of energy is always upright. |
| 2. | Pyramid of numbers in a grassland ecosystem is upright. |
| 3. | Pyramid of biomass in sea is generally inverted. |
| 4. | Pyramid of biomass in sea is generally upright. |
Subtopic: Ecological Pyramids |
85%
From NCERT
NEET - 2021
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If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain?
Plant → mice → snake → peacock
| 1. | 0.02 J | 2. | 0.002 J |
| 3. | 0.2 J | 4. | 0.0002 J |
Subtopic: Ecological Pyramids |
77%
From NCERT
AIPMT - 2014
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| Assertion (A): | The pyramid of number of pond ecosystem is upright. |
| Reason (R): | Phytoplanktons are maximum and secondary consumers are lesser in number. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (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: Ecological Pyramids |
70%
From NCERT
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Which one of the following is not a limitation of ecological pyramids?
| 1. | Saprophytes are not given any place in ecological pyramids |
| 2. | It assumes a simple food chain that, almost, never exists in nature |
| 3. | It accommodates a food web |
| 4. | It does not take into account the same species belonging to two or more trophic levels |
Subtopic: Ecological Pyramids |
73%
From NCERT
NEET - 2024
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Study the given pyramid and select the correct statements based on the given figure?
| I: | It represents an ideal pyramid of energy in an ecosystem. |
| II: | Primary producers convert only 1% of the energy in the sunlight available to them into NPP. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Ecological Pyramids |
70%
From NCERT
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In most ecosystems, which of the following pyramids are upright?
I: pyramid of number
II: pyramid of energy
III: pyramid of biomass
1. Only II
2. Only I and III
3. Only I and II
4. I, II and III
I: pyramid of number
II: pyramid of energy
III: pyramid of biomass
1. Only II
2. Only I and III
3. Only I and II
4. I, II and III
Subtopic: Ecological Pyramids |
57%
From NCERT
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