GEOL 333 Lecture Notes - Lecture 12: Tracheid, Chert, Cellulose
22 Feb 2021
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Cellulose cell wall - rigid structure that surround the cell. Chloroplasts - organelles that are capable of photosynthesis. Chlorophyll a and b - pigments that absorbs red and blue light and reflects green light. Green algae is the most primitive and ancient plant known. Chloroplasts are endosymbiotic - when one organism lives within the body or cells of another organism. Formed when cyanobacteria were engulfed by a larger cell. Moving water from tissues with direct access to water to tissues without direct access. Lack vascular tissue - specialized groups of cells that conduct and/or dissolved nutrients throughout the plant body. First land plants were small and had low, sprawling growth. Double the cell wall (double the structural support) Hollow stem allow oxygen to move to roots. High oxygen levels lots of coal deposits form. Seeds: in ferns and horsetails, embryos aren"t mobile and offspring have to live in the same place as their parents.
