Question : The productivity of an ecosystem is composed of which of the following?

Option 1: Gross productivity and primary productivity

Option 2: Primary and secondary productivity

Option 3: Net productivity and consumption

Option 4: Net primary productivity and gross primary productivity

Question : Courier service comes under which sector?

Option 1: Primary

Option 2: Secondary

Option 3: Tertiary

Option 4: Both secondary and tertiary

Question : Butan-2-ol is a:

Option 1: tertiary alcohol

Option 2: ketone

Option 3: primary alcohol

Option 4: secondary alcohol

Question : In a lake ecosystem, the primary consumers are ________.

Option 1: zooplankton

Option 2: phytoplankton

Option 3: bacteria

Option 4: fishes

Question : In a particular trophic level, how is the standing crop measured?

Option 1: As biomass

Option 2: As gross productivity

Option 3: As net productivity

Option 4: As pyramid of energy