| Answer | Crossword Clue |
|---|---|
| OVUM | One in the sac |
| oogonium | the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs |
| oogonia | the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs |
| oogonial | the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs |
| RBI | A sac fly results in one |
| RBI | A sac fly earns one |
| RBI | You get one for a sac fly |
