BIOL 1050 Lecture Notes - Lecture 2: Seed, Clover, Gametophyte
25 Sep 2016
School
Department
Course
Professor
Document Summary
Scattered, no secondary growth (wont thicken, only grows vertically [ex. Ring formation with secondary growth (thickens over time [ex. Plants are not mobile; therefore, the sporophytes cannot move around to find a mate. Range from 6 m (0. 006 mm) to over 100 m (0. 1 mm) Outer coating (exine: different patterns, composed of sporopollenin. Extremely resistant to degradation: physical, biological, and chemical degradation, helps protect pollen in harsh environments. Among most chemically inert polymers: unknown composition, likely diverse and multi-component. Palynology: study of particulates in sediment and fossils, pollen can be used to: Follow changes in the plant ecosystems over time. Type of honey can be determined by pollen type. Fda requires pollen to be honey: 76% of us grocery store honey contains no pollen. China was making and exporting tons of (cid:498)fake honey(cid:499) Honey was adulterated (made impure by adding fake honey and glucose) Transfer of pollen from an anther to a stigma: wind, water, animals.
