Packet 7: Bonus 3
G. Evelyn Hutchinson devised these roles as N-dimensional volumes in a space that parametrizes resources. For 10 points each:
[10h] Name these roles, whose various definitions include Grinnellian and Eltonian ones. Organisms that construct these roles for themselves can pass them down to their offspring via ecological inheritance.
ANSWER: ecological niche
[10e] These animals are “niche constructors” because they vastly alter river ecosystems by building dams.
ANSWER: beaver [accept Castor]
[10m] Beavers’ role as niche constructors make them this kind of species, which plays an outsized role in the stability of an ecosystem relative to their population.
ANSWER: keystone species [prompt on ecosystem engineers]
<Biology — Sarah Benner> | SHOW-ME Four Packet 7
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 26 | 21.54 | 96% | 77% | 42% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Coldwater | Taylor | 0 | 10 | 10 | 20 | EM |
| Detroit Catholic Central A | DeWitt A | 10 | 10 | 10 | 30 | HEM |
| Detroit Catholic Central B | Grand Ledge | 0 | 10 | 10 | 20 | EM |
| Hillsdale Academy A | Detroit Country Day B | 0 | 10 | 10 | 20 | EM |
| Holt | Detroit Country Day A | 0 | 10 | 0 | 10 | E |
| New Boston Huron | Hillsdale Academy C | 0 | 10 | 10 | 20 | EM |
| New Buffalo B | Detroit Catholic Central C | 0 | 10 | 0 | 10 | E |
| Okemos A | White Cloud A | 0 | 0 | 10 | 10 | M |
| Rockford A | White Cloud B | 0 | 10 | 0 | 10 | E |
| Traverse City Central A | Hillsdale Academy D | 10 | 10 | 10 | 30 | HEM |
| Traverse City Central B | DeWitt B | 0 | 10 | 10 | 20 | EM |
| Troy A | Okemos B | 10 | 10 | 10 | 30 | HEM |
| Troy B | Rockford B | 0 | 10 | 10 | 20 | EM |
| U of D Jesuit | New Buffalo A | 0 | 10 | 10 | 20 | EM |
| Utica Academy | Hillsdale Academy B | 10 | 10 | 0 | 20 | HE |
| Williamston | Chelsea | 10 | 10 | 10 | 30 | HEM |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 16 | 20.00 | 94% | 75% | 31% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 5 | 30.00 | 100% | 100% | 100% |
| SPOOKY IX | 11/20/2025 | ✓ | 5 | 18.00 | 100% | 60% | 20% |