Botany Exam 2 Notes - Kingdom Plantae 270,000 Species...

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Kingdom Plantae - 270,000 Species - Eukarotic cells - Multicellular - Cell wall mainy made of cellulose - Most photosynthetic with chlorophyll A and B, carotenoides - Believed to evolved from Green Algae - Store Starch - Structurally Complex Evolutationary Trends - Primitive plants spend moe time as gametophye - Advanced plants spend more time as sphorophyte - Increased specialization fo rterrestrial life - Increased specialization of plant parts Bryophytes - First land plants - No true stem or roots - No true leaves - Nonvascular - Rhizoids (root like structures ) - No flowers, seeds or fruits - Water is required for reproduction - Chlorophyll A and B - Store Starch - Cellulose in cell wall Hypaticophyta (Liverworts) - About 8000 species - Most primitive phyla
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- Very small in general - Lack conducting cells (moving water/food) - Lack cuticle - Lack stomata - Pores - Rhizoids Thalloid 20% of Hepaticophyta Thallus – flattened lpobed somewhat leaf like bodies Leafy 80% of Hepaticphyta Resemble mosses Anthocerophyta (Hornworts) - About 100 species world wide - Nitrogen-fixing cyanobacteria often grow in mucilage
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This note was uploaded on 04/07/2008 for the course BIO 1130 taught by Professor Stein during the Spring '08 term at Mansfield University of Pennsylvania.

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Botany Exam 2 Notes - Kingdom Plantae 270,000 Species...

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