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

Standing crop is: 

(i) Amount of detritus in unit area
(ii) Number of living organisms in unit area
(iii) Amount of nutrients such as carbon, nitrogen, and calcium in unit area
(iv) Biomass in unit area

1. (i) and (iv)

2. (i) and (iii)

3. (ii) and (iv)

4. only (iv)

Which one of the following is not used for construction of ecological pyramids?

1. Dry weight

2. Number of individuals

3. Rate of energy flow

4. Fresh weight

The base of each pyramid represents the _________or the ___________level while the apex represents ____________
1. Consumers, first trophic and top trophic level
2. Producers, first trophic and top trophic level
3. Producers, second trophic and top trophic level
4. Consumers, second trophic and top trophic level

Identify the relationship represented by the pyramid

1. Pyramid of number

2. Pyramid of biomass

3. Pyramid of energy

4. None of the above

Which of the following pyramid represents the pyramid of number in grassland?

                          A

                        B

                          C

1. A

2. B

3. C

4. B & C

Which of the following statement is incorrect?

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

Which of the following pyramids can never be inverted in a natural ecosystem?

1. pyramid of numbers

2. pyramid of energy

3. pyramid of biomass

4. all can be inverted 

In general, the biomass in an ecosystem will be greatest at the trophic level comprising.

1. secondary consumers

2. primary consumers

3. producers

4. tertiary consumers