Final answer:
Cellular respiration is how cells use absorbed food to produce energy, exemplified by organisms that ingest, digest, absorb, and metabolize food for growth and energy. Cnidarians are multicellular organisms with tentacles around their mouths, using them to ingest food.
Step-by-step explanation:
The process of using the absorbed food by the cells of the body to produce energy, support growth, and other functions is known as cellular respiration. It begins with the act of ingestion, where food is taken in, followed by digestion, where it is broken down into smaller molecules. After digestion, the small molecules are absorbed by cells and used in cellular metabolism to generate ATP (adenosine triphosphate), the energy currency of the cell. This entire process is critical for maintaining life and is essentially how organisms obtain and use energy from food.
A multicellular organism with a simple body structure that consists of numerous tentacles around its mouth is known as a cnidarian. Examples of cnidarians include jellyfish, corals, and sea anemones. These organisms use their tentacles for defense and to capture prey, and they exhibit a basic form of ingestion and digestion to obtain nutrients.