| A | B |
|---|
| pollen grain | a structure produced in the male part of a flower and which contains the male sex cell. |
| pollination | the transfer of pollen grains to the pistil of a flower |
| sexual reproduction | the production of offspring that occurs when a male sex cell joins a female sex cell. |
| embryo | an organism in its earliest stages of development |
| fruit | the enlarged ovary of a flower that protects the developing seeds |
| germination | the sprouting of a seed |
| fertilization | the process by which a male sex cell joins with a female sex cell |
| inherited | passed down |
| spurt | a time of growing quickly |
| infancy | a stage in the human life cycle that lasts from birth to about age one |
| childhood | a stage in the human life cycle that lasts from about age one to age 11 or 12 |
| adolescence | a stage in the human life cycle that lasts from about age 12 to 18 to 20 |
| adulthood | a stage in the human life cycle that lasts from about age 18 until death |
| complete metamorphosis | the development of an organism through fours stages- egg, larva, pupa, adult |
| egg | the first stage in an organism's life cycle |
| larva | the wormlike stage that follows the egg stage of an insect's life cycle |
| pupa | the stage in a life cycle between thae larva and the adult |
| adult | the final stage of an organism's life cycle |
| conifers | a tree or shrub that bears its seeds in cones |
