It is like a tiny organ because every organelle has a certain role in the cell for which it was designed. In this sense it resembles an organ as every organ has a certain role and function it has to perform as well. Organelles have a certain structure which is reflected in their function; this is another thing that is very similar to organs for example.
A it would be predation. I can explain if you want.
I'm gonna say Chemical makeup and how they can be used.
Animals' internal body structures can either be coelomate, acoelomate, or pseudocoelomate. This means they may or may not have a body cavity. The answer is D).