OBJECTIVE FORESTRY

FORESTRY

ECOLOGY AND ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
As you move up from one trophic level to another, why is only 10% of energy from the previous level passed on?
A
producers get 100% of the energy
B
it’s lost as heat and to perform life functions.
C
primary consumers keep misplacing the rest.
D
none of these
Explanation: 

Detailed explanation-1: -The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Detailed explanation-2: -When green plants are consumed by the herbivores (primary consumers) most of the energy is liberated as heat to the environment, some amount goes into digestion and some energy used for growth and reproduction. Only 10% of the food eaten is turned into its own body and made available for the next level of consumers.

Detailed explanation-3: -Only 10% of the energy is passed on from one level to another in the food chain. That is, only 10% of energy is available for transfer to the higher level out of the energy gained from the previous level. The remaining 90% of the energy is lost in form of heat to the atmosphere, unusable.

There is 1 question to complete.