| A | B |
|---|
| cell | The basic building block of life |
| cell membrane | The thin layer that encloses and gives shape to a cell |
| cytoplasm | A jellylike substance that fills most of the space in a cell |
| nucleus | A cell's control center |
| cell wall | A structure that keeps a cell rigid and provides support to an entire plant |
| chloroplast | A part of a plant cell that contains chlorophyll, the green pigment plants need to make their food |
| microorganism | Organisms that are so small they can only be seen with a microscope; many have only one cell |
| vertebrate | An animal with a backbone |
| invertebrate | An animal without a backbone |
| arthropod | An invertebrate with legs that have several joints |
| embryo | A young plant |
| flower | Reproductive structures in flowering plants |
| fruit | The part of a flowering plant that surrounds and protects the seeds |
| fungi | Living things such as mushrooms that look like plants, but can not make their own food |
| hyphae | Densely packed threadlike parts of a fungus |
| spore | A tiny cell that ferns and fungi use to reproduce |
| mold | A common type of fungi that often looks cottony or woolly |
