Correct Option (a)
Reason : Standing crop is the total amount of living matter in a specified population at a particular time, expressed as biomass (standing biomass) or its equivalent in terms of energy. The standing crop may vary at different times of the year for example in a population of deciduous trees between summer and winter.
Correct Option (a) Reason : Standing crop is the total amount of living matter in a specified population at a particular time, expressed as biomass (standing biomass) or its equivalent in terms of energy. The standing crop may vary at different times of the year for example in a population of deciduous trees between summer and winter.