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Unformatted text preview: 1 Plant Diversity Kingdom Plantae Eukaryotic, Autotrophic, Multicellular, Sexual Reproduction Plants evolved from one type of protistan, the Green Algae. Evidence for this relationship includes: , biochemical attributes (such as photosynthesis, composition of cell walls) , cellular attributes (such as mechanism of cell division, chloroplast structure) , molecular attributes (such as similarities in ribosomes, the protein synthesizing platforms) The typical plant body is made up of three main specialized parts: the root, the stem, and the leaf. Plant Anatomy Photosynthesis is a two-step process: 1. Using special purpose pigments, such as chlorophyll, plants convert light energy into high-energy-chemical intermediates. 2. The high-energy-chemical intermediates are used in the conversion of energy-poor raw materials (CO 2 , NO 3-, or SO 4-) to biologically useful forms (e.g. sugars and amino acids). The chemical equation for photosynthesis is: 6CO 2 + 12H 2 0 ---------> C 6 H 12 O 6 + 6O 2 + 6H 2 O Photosynthesis sunlight chlorophyll Plant vascular tissues Xylem- transports water and nutrients (minerals) moving up from roots throughout the plant body (for use in photosynthesis) Phloem- transports the products of photosynthesis (sugars, etc.) from leaves for use in plant cells 2...
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