Energy-producing organelles are the
o ribosomes
o mitochondria
o ysosomes
nuclei

B. the mitochondria is known as the "powerhouse" of the cell. 

I hope this helps:)

Mitochondria because its the power house of the cell

Ifound this on google “aristotle (384–322 bc) in western scientific taxonomy the greek philosopher aristotle was the first to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called animals with blood and without blood.” i hope this you for what your looking for.