| A | B |
|---|
| invertebrate | animal with no backbone |
| vertebrate | animal with a backbone |
| cell wall | thick nonliving covering of a plant cell |
| chloroplast | green cell part that traps sunlight |
| cell membrane | thin, living cell covering |
| nucleus | cell part that controls the activities of other cell parts |
| vacuole | storage sacs in the cell |
| cytoplasm | jellylike fluid between the cell membrane and the nucleus |
| tentacle | slender, flexible body part used to touch, hold, or move |
| segmented | made of many similar sections |
| parasite | organism that harms another organism by living on or in it and taking nutrients from it |
| regenerate | regrow lost body parts |
| mollusk | invertebrate with an unsegmented soft body, often covered by a hard shell |
| arthropod | invertebrate with jointed feet and a segmented body |
| exoskeleton | outside covering that supports the body |
