In a particular trophi level, how is the standing crop measured?

Correct option is A

The correct answer is (a) As biomass.
 The standing crop at a particular trophic level is measured as biomass.
 Biomass refers to the total mass of living organisms in a given area or volume at a specific time.
 It is an indicator of the amount of living material available at each trophic level in an ecosystem.
Information Booster:
 Gross Productivity: This refers to the total rate at which energy is captured by autotrophs (producers) through photosynthesis or chemosynthesis before any losses due to respiration.
 Net Productivity: This is the rate at which energy is stored as biomass by autotrophs after accounting for energy lost through respiration.
 Pyramid of Energy: Represents the flow of energy through each trophic level in an ecosystem over time, usually expressed in units of energy (e.g., joules or calories).