BIOL 1902 Study Guide - Not Many, History Of Ontario, Cups
Document Summary
Forests have physical barrier of trunks and leaves, thus wind not. Present in summer: wind is available only in fall, winter when there are no leaves. On trees (only a few plants exploit: animals: spring ephemerals seeds mature in mid-summer (trilliums, violets, etc. Food = elaiosomes (protein package on seeds: rain drops: used two ways, splash cups - mitrewort, spring board - foamflower, violets also use ballistic ejection = forcible ejection of seeds. Some plants in wet areas have ballistic ejection: jewelweed = Touch-me-not; seeds mature in pods that develop high tension, Spring apart when touched and catapult seeds up to 3 metres from. Advantages to seed dispersal: less crowding and competiton with parent nutrients, some light, if parent disease or parasite, less chance of spreading to young. And vica versa: when offspring matures, reduces chance of inbreeding. I hope you have seen that in all aspects of their. Much more than a bunch of pretty faces!
