Republic of the PhilippinesDepartment of Education

Region V (Bicol)DIVISION OF LEGAZPI CITY

Legazpi City

COMPETENCY:

Describe the transfer of energy through the Trophic Levels.

Name:____________________________________ Grade & Section:_____________________________

Food Chain Trophic Levels - Worksheet

1. What is a trophic level? What does it show us?

2. What is an autotroph?

3. What is a heterotroph?

4. If you have 1000 Kg of cattle that need to be fed on a ranch, how much grass must be available for them to eat?

5. What is carrying capacity? How is it affected by limiting factors?

If the sun provides 1000% ENERGY to producers, What is the energy level in percentage (%) available at each trophic level? Please explain using the energy pyramid.

Producer

1st level consumer

2nd level consumer

3rd level consumer