BIOA02H3 Lecture Notes - Lecture 5: Inbreeding Depression, Apical Dominance, Flowering Plant

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Ivana Stehlik

Document Summary

Body plans of major angiosperm groups: seed dispersal (seed germination) Once the seeds are produced the parent cells want the seeds to move out of their (cid:858)ho(cid:373)e(cid:859) Self dispersal: (autochory: good example: jewel weed, flowers develop into pods & the wall of seed pods are under pressure when touched, it explodes, water dispersal: (hydrochory) External hitchhiking: have hooks to attach to animals, etc, largest hitchhikers: burdock, idea of velcro came up with these plants. First biotic vector ant dispersal: (myrmecochory: ants gain nutrient-rich food plants attach a food body to the seed called. Elaiosomes: elaiosomes (elaios- oil, some- body) filled with protein for ants (from plants, fleshy structure attached to seed, rich in lipids and proteins, symbiotic relationship, pla(cid:374)t seed, dispersal; a(cid:374)t food. Internal hitchhiking: once the seeds are ride, the plant will pump into a lot f water and sugar to change colour, to make the seeds are attractive. Comparison of dispersal distances: seed anatomy (seed germination)