| bud | a flower or leaf that is not fully open |
| budburst | the process when a bud opens up and new leaves or flowers start to grow |
| plankton | very small plants and animals that float on the surface of the sea |
| log | a thick piece of wood that is cut from or has fallen from a tree |
| trunk | the thick main stem of a tree, from which its branches grow |
| acorn | an oval nut that grows on an oak tree and has an outer part shaped like a cup |
| cactus | a desert plant with sharp points instead of leaves |
| photosynthesis | the process where green plants use sunlight to turn CO2 and water into food. |
| petal | a delicate (= fragile) coloured part of a flower |
| corolla | the ring of petals around the central part of a flower |
| vegetation | plants in general, especially the plants that are found in a particular area or environment |
| pollination | the process of pollen entering or being put into a flower or plant so that it produces seeds |