| A | B |
| apical meristem | tissue at the tips of roots and stems that produces cells, which results in an increase in length |
| root cap | layer of parenchyma cells that covers the root tip and helps protect root tissues during growth |
| cortex | layer composed of ground tissues between the epidermis and a vascular tissue of a root |
| endodermis | cell layer at the inner boundary of the cortex; regulates the material that enters the plant’s vascular tissue |
| pericycle | plant tissue that produces lateral roots |
| petiole | stalk that connects a plant’s blade to the stem |
| palisade mesophyll | leaf tissue layer that contains many chloroplasts and is the site where most photosynthesis occurs |
| spongy mesophyll | loosely packed, irregularly shaped cells with spaces around them located below the palisade mesophyll |
| transpiration | process in which water evaporates from the inside of leaves to the outside through stomata |