OBJECTIVE LIFE SCIENCE
ECOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The movement of energy in the trophic levels of a food chain or web
|
|
|
The energy consumed by each individual in an ecosystem
|
|
|
The food web and all of its connections
|
|
|
The survival of the fittest at the top
|
Detailed explanation-1: -A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels.
Detailed explanation-2: -Definition. Trophic level is the relative position of an entity in the food chain. It forms the feeding positions in a food web or chain. All food webs and chains have at least two or three trophic levels. An ecological pyramid depicts how energy and biomass decrease from lower to higher trophic levels.
Detailed explanation-3: -Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.