Name by words or numbers all of the following four organelles found in plant cells that may have arisen as a result of a symbiotic relationship with prokaryotes (read as: prōe-KAHR-ee- ōets): 1) chloroplast, 2) endoplasmic reticulum (read as: ri-Tl-kyuh-luhm), 3) ribosome (read as: RY-boh-sōem), or 4) mitochondria (read as: my-toh-KOHN-dree-ah)?