What does 10 per cent law say?

1.	Less than 10 per cent of the energy is transferred to each trophic level from the lower trophic level
2.	Only 10 per cent of the energy is transferred to each trophic level from the lower trophic level
3.	Only 10 per cent of the energy is assimilated from the eaten food
4.	Consumer gains 10 per cent mass of the consumed food

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?

If the available energy at first trophic level is 10000 J then how much trophic levels it could support further?

1. 2

2. 3

3. 4

4. 5

Which of the following statement is incorrect?

The pyramid of biomass in the sea is generally

1. Upright

2. Inverted

3. Bell-shaped

4. Rectangular, stable.

Why does the pyramid of energy always upright?

1. Because energy cannot be destroyed.

2. Smaller organisms have more potential energy than larger ones

3. Because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step.

4. More than one statement is correct.

Which of the following is not a limitation of ecological pyramids?

1. It does not take into account the same species belonging to two or more trophic levels.

2. It assumes a simple food chain, something that almost never exists in nature;

3. It does not accommodate a food web.

4. Saprophytes are given a special place in ecological pyramids.