Ecosystem(Patterns, Components; Productivity and Decomposition; Energy Flow; Pyramids of Number, Biomass, Energy)
Ecosystem(Patterns, Components; Productivity and Decomposition; Energy Flow; Pyramids of Number, Biomass, Energy) MCQ Questions
13.
Productivity in an ecosystem refers to:
A.
Total energy stored in soil
B.
The amount of decomposition
C.
The total number of species
D.
The rate of biomass production
ANSWER :
D. The rate of biomass production
14.
Primary productivity is defined as:
A.
The biomass produced by herbivores
B.
The biomass produced by carnivores
C.
The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis
D.
The total biomass of decomposers
ANSWER :
C. The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis
15.
The unit for primary productivity expressed as energy is:
ANSWER :
D. kcal m⁻² yr⁻¹
16.
Gross Primary Productivity (GPP) is:
A.
Total biomass of an ecosystem
B.
GPP minus respiration losses
C.
Net biomass available to herbivores
D.
Rate of production of organic matter during photosynthesis
ANSWER :
D. Rate of production of organic matter during photosynthesis
17.
Net Primary Productivity (NPP) is calculated as:
D.
GPP - Respiration losses (R)
ANSWER :
D. GPP - Respiration losses (R)
18.
Net Primary Productivity (NPP) represents:
A.
Total energy fixed by producers
B.
Available biomass for consumption by herbivores and decomposers
D.
Energy lost in respiration
ANSWER :
B. Available biomass for consumption by herbivores and decomposers
