Packet O: Bonus 5
These structures are mainly classified into determinate or indeterminate types depending on whether or not they maintain active meristems in zone I (“one”). For 10 points each:
[10m] Name these cylindrical structures largely used by legumes to harbor nitrogen-fixing Rhizobium bacteria. These structures often form around root curls and produce leghemoglobin to regulate oxygen concentrations.
ANSWER: root nodules [accept nitrogen-fixing nodules]
[10h] These starch-filled organelles begin to disappear after nodule cells are infected with Rhizobium bacteria. Statoliths are a type of this double-membrane organelle that can sense the direction of gravity in stem and root tips.
ANSWER: amyloplasts [prompt on plastids or plasts; prompt on leucoplasts; reject “chloroplasts” or “chromoplasts”]
[10e] Plant responses to Rhizobium and arbuscular mycorrhizal organisms from this kingdom share a common symbiosis signaling pathway. This kingdom includes ascomycetes that can extend their hyphae between plant cells.
ANSWER: fungi [or fungus]
<AL, Biology> | Packet O - Editors 1
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 13 | 17.69 | 100% | 77% | 0% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Virginia | Virginia Tech A | 10 | 0 | 10 | 20 | ME |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Canada | Main Site | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| Florida | Main Site | ✓ | 2 | 15.00 | 100% | 50% | 0% |
| Great Lakes | Main Site | ✓ | 1 | 10.00 | 100% | 0% | 0% |
| Lower Mid-Atlantic | Main Site | ✓ | 1 | 20.00 | 100% | 100% | 0% |
| Midwest | Main Site | ✓ | 2 | 15.00 | 100% | 50% | 0% |
| Northeast | Main Site | ✓ | 1 | 20.00 | 100% | 100% | 0% |
| Overflow | Main Site | ✓ | 1 | 20.00 | 100% | 100% | 0% |
| UK | Main Site | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| Upper Mid-Atlantic | Main Site | ✓ | 1 | 20.00 | 100% | 100% | 0% |