ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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always a pyramid shape
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sometimes inverted
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used to represent energy flow
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often easy to draw to scale
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Detailed explanation-1: -The pyramid of numbers is either upright or inverted. An upright pyramid of numbers is found in the grassland ecosystem. This ecosystem is featured through various autotrophs that support lesser herbivores. The herbivores, in return, help a smaller number of carnivores.
Detailed explanation-2: -1. The pyramid of numbers can be completely inverted. 2. The pyramid of energy is always upright.
Detailed explanation-3: -In a tree ecosystem, the pyramid of numbers is inverted because the number or biomass at the producer level is minimum and increases at each trophic level and is similar in the case of sea ecosystem.
Detailed explanation-4: -The pyramid of energy can never be inverted but is always upright because of the 10% law of energy flow. Every trophic level has 10% of the energy available from the previous trophic level.
Detailed explanation-5: -An inverted pyramid is formed when the number of individuals or biomass is minimum and increases at each trophic level. The pyramid of biomass in a pond ecosystem is an example of an inverted pyramid because the biomass of phytoplankton may be smaller than that of zooplankton.