| A | B |
|---|
| fertilization | the union of male and female reproductive cells |
| pistil | the female part of a flower |
| ovary | part that contains the eggs inside ovules |
| stamens | the pollen-producing male parts of the flower |
| embryo | the part of the seed from which the plant develops |
| germinate | to sprout |
| cotyledons | the food storage structures of the seed |
| seedling | the name of the seed after it begins to grow and mature |
| vegetative propagation | a type of reproduction that occurs asexually, or without seeds |
| grafting | a type of artificial reproduction that helps improve the stock of fruit trees |
| tissue culture | the use of plant chemicals to develop new plants |
| epidermis | the outer surface of a leaf |
| palisade layer | lies below the outer cells and contains the chloroplasts, so most photosynthesis takes place here |
| photosynthesis | the process of using light to make food for the plant |
| cellular respiration | using food to provide energy for the plant |
| tropism | a plant's response to a stimulus |
| phototropism | plant growth toward light |
| gravitropism | this causes plant roots to grown downward into the soil |
