Define decomposition and describe the processes and products of decomposition.
08/11/2024
Biology
12th (Science)
Ecosystem
What is primary productivity? Give brief description of factors that affect primary productivity.
08/11/2024
Biology
12th (Science)
Ecosystem
Define ecological pyramids and describe with examples, pyramids of number and biomass.
08/11/2024
Biology
12th (Science)
Ecosystem
Describe the components of an ecosystem.
08/11/2024
Biology
12th (Science)
Ecosystem
Distinguish between
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and Food web
(e) Litter and detritus
(f) Primary and secondary productivity
08/11/2024
Biology
12th (Science)
Ecosystem
What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation?
(a) 100%
(b) 50 %
(c) 1-5%
(d) 2-10%
08/11/2024
Biology
12th (Science)
Ecosystem
Secondary producers are
(a) Herbivores
(b) Producers
(c) Carnivores
(d) None of the above
08/11/2024
Biology
12th (Science)
Ecosystem
The second trophic level in a lake is
(a) Phytoplankton
(b) Zooplankton
(c) Benthos
(d) Fishes
08/11/2024
Biology
12th (Science)
Ecosystem
Which one of the following has the largest population in a food chain?
(a) Producers
(b) Primary consumers
(c) Secondary consumers
(d) Decomposers