Q. No.Which one of the following is not used for the construction of ecological pyramids?
| 1. | Dry weight | 2. | Number of individuals |
| 3. | Rate of energy | 4. | Fresh weight |
| 1. | Detritus | 2. | Humus |
| 3. | Standing state | 4. | Standing crop |
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. |
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 |
An inverted pyramid of biomass can be found in which the ecosystem?
1. Forest
2. Marine
3. Grassland
4. Tundra
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
Mark the odd one with respect to shape of ecological pyramids.
1. Pyramid of energy.
2. Pyramid of number in grassland ecosystem.
3. Pyramid of biomass in aquatic ecosystem.
4. Pyramid of biomass in terrestrial ecosystem.
In grassland ecosystem the pyramid of biomass and energy will be A and B respectively.
Choose the correct option to fill the blanks A and B.
A B
1. Upright Upright
2. Upright Inverted
3. Inverted Upright
4. Inverted Inverted
How many of these have no place in ecological pyramids?
|
Detritivores, Scavengers, Decomposers, Producers, Insectivorous plant |
1. 2
2. 3
3. 4
4. 1
| 1. | It shows the energy content of different trophic-level organisms |
| 2. | It is inverted in shape |
| 3. | It is upright in shape |
| 4. | Its base is broad |
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