Energy Transfer in Trophic Levels

The video tutorial explains the 10% rule of energy transfer in ecosystems, where only 10% of energy is passed to the next trophic level while 90% is lost to the environment. It illustrates this concept with examples, showing how 1,000 kg of producers can support 100 kg of primary consumers, 10 kg of secondary consumers, and 1 kg of tertiary consumers. The tutorial also demonstrates how to calculate the energy available at different trophic levels using kilocalories, emphasizing the importance of the 10% rule in understanding energy distribution in an energy pyramid.

What percentage of energy is typically transferred from one trophic level to the next?

• 50%

• 5%

• 20%

• 10%

If there are 1,000 kg of producers, how much biomass can be supported at the tertiary consumer level?

• 10 kg

• 100 kg

• 1 kg

• 0.1 kg

What is the term used to describe the energy transfer rule where only 10% of energy is passed to the next trophic level?

• Energy Conservation Rule

• Energy Loss Rule

• Biomass Rule

• 10% Rule

How many kilocalories are available at trophic level 2 if trophic level 1 has 100,000 kilocalories?

• 1,000 kilocalories

• 10,000 kilocalories

• 100 kilocalories

• 50,000 kilocalories

To find the energy available at trophic level 3, what calculation should be performed?

• Divide energy at level 2 by 10

• Subtract 10% from energy at level 2

• Multiply energy at level 2 by 10

• Add 10% to energy at level 2

If 1,000 kilocalories are available at trophic level 3, how many kilocalories are available at trophic level 4?

• 500 kilocalories

• 10 kilocalories

• 1,000 kilocalories

• 100 kilocalories

What is the energy available at trophic level 4 if trophic level 3 has 1,000 kilocalories?

• 10 kilocalories

• 100 kilocalories

• 1,000 kilocalories

• 1 kilocalorie