Question 16
Review the food chain below and consider the flow of energy. If the grass has 1000 units of energy, approximately, how many units of energy will be transferred to the frogs.
a
1000 units
b
900 units
c
100 units
d
10 units
e
Impossible to determine
The energy transferred from one trophic level to the next is typically around 10%. In a food chain, energy flows from the primary producers (plants) to the primary consumers (herbivores) and then to the secondary consumers (carnivores).
In this case, the frogs are the secondary consumers, meaning they obtain energy from the primary consumers (herbivores). Therefore, if the grass has 1000 units of energy, approximately 10% of that energy will be transferred to the frogs.
Answer: d) 10 units