BIOL 1030 Lecture Notes - Eudicots, Dicotyledon, Coevolution

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Carla Zelmer

Document Summary

Monocots: 50,000 species: lilies, orchids, grasses, many economic plants for human uses. Dicots: 200,000 species: eudicots include elms, willows, roses, peas, canola. Sepals: green & leaf-like, encloses other ower parts (bud) Petals: often pigmented to attract pollinators. Form can be co-evolved w pollinator: wind pollinated plants have very reduced owers. Carpel (angiosperms only: stigma - receives pollen, site of pollen tube germination, style - elevates stigma to make it more accessible to pollinators, ovary - encloses & protects the ovule. Nectaries may be pre send: at the base of petals, o er sugar reward to pollinators, help to align pollinators. Each grain (kernel) has one ower origin. Corn cob is a population of individuals monocoteudicotembryosone cotyledontwo cotyledons leaf venationveins usually parallelveins usually netlikestemsvascular tissue scatteredvascular tissue usually arranged in ringrootsroot system usually brous (no main root)taproot (main root) usually presentdouble fertilization. Syngamy: sperm (n) + egg (n, zygote (2n) Dispersal of the seeds: eaten by animals.