Question

PLEASE HELP ASAP!!!!

The image is an energy pyramid for a particular food chain.

The amount of energy received by the macaws will be ______.
1. 56,000 Cal
2. 560,000 Cal
3. 560 Cal

Macaws are captured and kept as pets. If the number of macaws decreases because of excess capture, the amount of energy received by the ocelots will be ______.
1. More than 5,600 Cal
2. Less than 5,600 Cal
3. Equal to 5,600 Cal

Answer 1

1) The answer is 56,000 Cal. Energy from the sun is taken by photoautotrophs (green plants) through the process of photosynthesis. Some of this energy is then taken by consumers when they feed on plants, with only 10% of the energy taken by the primary consumers, then when the secondary consumers feed on the primary consumers they also take 10% of the energy, and the process continues. The rest of energy is lost inform of heat energy. Therefore; the energy recieved by ocelot (tertiary consumers) is 10% of the energy from the macaw (secondary consumer). hence
(5600/10)×100= 56000 Cal

2) The answer is Less than 5600 Cal
When the number of Macaw (secondary consumers) decreases the number of tertiary consumers also decreases since they depend on the secondary consumers for energy. Thus the energy obtained from the remaining macaw will be lower.