Study the following statements.

a) Trophic level represents functional level, not a species as such.

b) Pyramid of biomass, energy & number is upright in grassland ecosystem.

c) Pyramid of energy is always upright.

d) Pyramid of biomass represents standing crop.

Which of the above statements are correct?

Trophic level represents functional level, not a species as such. one of the hierarchical strata of a food web characterized by organisms which are the same number of steps removed from the primary producers.

Pyramid of biomass, energy & number is upright in grassland ecosystem.

Pyramid of energy is always upright. Ten percent law states that 10% of energy is transferred to the successive trophic levels in an unidirectional manner.

Pyramid of biomass represents standing crop. Each trophic level has a certain mass of living material at a particular time called as the standing crop.