ANIMAL PHYSIOLOGY
DIGESTION IN HUMANS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
A food pyramid lists decomposers.
|
|
|
A food pyramid does not include producers.
|
|
|
A food pyramid categorizes consumers as producers, primary, secondary, and top level.
|
|
|
A food pyramid starts with a larger base and each level gets smaller as it moves up the top consumer.
|
Detailed explanation-1: -The bottom and largest level of the pyramid is the producers and contains the largest amount of energy. As you move up the pyramid, through the trophic levels to primary, secondary and tertiary consumers, the amount of energy decreases and the levels become smaller.
Detailed explanation-2: -The base must have the largest amount of biomass (shown as the widest bar) so it can support the energy requirements of the organisms at higher levels. Each higher level in the pyramid gets smaller (the bars get narrower) because only about 10% of the available energy transfers to the next level.
Detailed explanation-3: -A pyramid of energy or pyramid of productivity shows the production or turnover (the rate at which energy or mass is transferred from one trophic level to the next) of biomass at each trophic level. Instead of showing a single snapshot in time, productivity pyramids show the flow of energy through the food chain.
Detailed explanation-4: -A pyramid of numbers shows the total number of individual organisms at each level in the food chain of an ecosystem. A pyramid of numbers does not always have a regular pyramid shape because it does not take into account the biomass of the organisms.
Detailed explanation-5: -The trophic levels are shown in a series or a succession to represent the flow of food energy and the feeding relationships between them. An ecological pyramid, in turn, represents the biomass or the energy flow in an ecosystem.