Define ecological pyramids and describe with examples, pyramids of number and biomass.
Ecological pyramids are diagrams or pictorial representation that illustrate how ecologically important factors, such as energy, biomass, and population size, vary between trophic levels in an ecosystem. Pyramids of number represents the number of organisms at each trophic level. For example in the grassland ecosystem the number of plants is the highest followed by number of primary consumer that is mice. Followed by Snake and eagle .
Pyramid of biomass represents the amount of biomass produced at each trophic level. For example in aquatic ecosystem the biomass of phytoplankton or the producer is the minimum while the number of primary consumer that is zooplankton is more . The number of the tertiary consumer or fishes in this case is the highest.
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Describe the components of an ecosystem.
What is primary productivity ? Give brief description of factors that affect primary productivity.
Define decomposition and describe the processes and products of decomposition.
What is the percentage of photosynthetically active radiation (PAR), if incident solar radiation is considered 100% ?
