| A | B |
|---|
| Cotyledon | A seed leaf of a plant embryo |
| Leaf | Broad, flat organ of a plant that traps light energy for photosynthesis |
| Guard cell | Pair of cells that surround and control the opening of the stomata |
| Cuticle | Protective, waxy layer covering most fruit, leaves, and stems that prevent water loss |
| Vascular plant | Contains tissues of tube-like elongated cells through which water and food are transported |
| Seed | Structure that contains an embryo along with a food supply and is covered by a protective coat |
| Gymnosperm | Vascular plant that produces cones |
| Meristem | Plant tissue that has highly active cells for growth and development (mitosis) |
| Transpiration | The evaporation of water from the internal surfaces of leaves which allows the movement of water through the plant |
| Mesophyll | Photosynthetic tissue of a leaf |
| Auxin | Hormone that promotes phototropism by allowing cell elongation on the dark side of the stem |
| Hormone | A chemical that is produced in one part of an organism and transported to another part, where is causes a physiological change |
| Tropism | A plant's response to an external stimulus from a particular direction |
| Gibberellins | Hormone that produces dramatic increase in size, particularly in stems and fruits |
