| A | B |
|---|
| cilia | short, hairlike projections that function in cell movement |
| hydrostatic skeleton | the pseudocoelom in roundworms; the fluid within a closed space that gives rigid support for muscles to work against |
| trichinosis | disease caused by eating raw or undercooked meat, usually pork, |
| protostome | an animal with a mouth that develops from the opening in the gastrula |
| crop | sac in which food and soil are stored until they pass to the gizzard; |
| gizzard | muscular sac in earthworms that contains hard particles that help grind soil and food before they pass into the intestine |
| seta | tiny bristle that digs into soil and anchors an earthworm as it moves forward |
| clitellum | thickened band of segments that produce a cocoon from which young earthworms hatch |
| convert | to change from one form to another |
