| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Many animals exhibit geotactic behavior; that is, they move in response to this force | gravity | $500 | J | BIOLOGY | 1993-10-05 | #2087 | |
| Geotropism is the directional growth movement of plants in response to this force | gravity DD | $400 | J | BIOLOGY | 1991-02-18 | #1496 | |
| The influence of this force makes most plant roots grow toward the center of the earth | gravity | $200 | DJ | BIOLOGY | 1987-10-29 | #724 |