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Plant taxonomy

plantevolution

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Bio104 Laboratory ? Student?s Guide John Jay College, C.U.N.Y Lab #6 ? Page 1 Lab #6: Evolution of Land Plants I. Introduction a. Last week, we learned about several types of green algae and explored their evolution from solitary single-celled organisms through colonialism and into multicellularity. Although green algae are protists, green algae and land plants share a common ancestor and have many shared features. Both are Eukaryotes and both have chloroplasts that are strikingly similar. b. However, plants have diverged considerably from algae. The two most striking differences are that plants have evolved life cycles that are very distinct from that of protists, and that nearly

Biology - Modern Plants

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Modern Plants Bryophytes (mosses) and Relatives Pteridophyta (Ferns) and Relatives Gymnosperms and Relatives Angiosperms and Relatives Examples Mosses, Liverworts, Hornworts Ferns, Psilotum (whisk fern), Lycopodium, Equisetum (horsetails) Conifers, Gingko, cycads Flowering plants, grasses, hardwoods Transport(xylem and phloem) Mostly Nonvascular Vascular Vascular Vascular Life Cycle Gametophyte (N) dominant Sporophyte dominant, small separate Gametophyte Sporophyte dominant Sporophyte dominant Spores or Seeds Spores Spores Seeds Seeds Fertilization Water Water Wind (Pollination) Wind/ animals (Flowers) Dispersal Water/ Wind Spores Water/ Wind Spores Wind Seeds Wind/ animals (Fruits) Seeds

Botany Introclassification

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Classification Multicellular Eukaryote Have cell walls made of cellulose Carry out photosynthesis AND respiration Most are autotrophs A few are parasites (live on living organisms) or saprobes (live on dead organisms) Store energy as starch (carbohydrates) Sunlight Water Minerals Gas Exchange (CO2 in: O2 and some CO2 out) Transport of water and nutrients throughout the plant body Remember Photosynthesis: 6H2O + 6CO2 ? C6H12O6 + 6O2 (water + carbon dioxide + sunlight ? glucose + oxygen) Plants life cycles have two alternating phases known as alternation of generations: A diploid (2N) phase known as the sporophyte (spore producing plant). A haploid (N) phase known as the gametophyte (gamete producing plant)

Plant Biology Midterm

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Bio 1B, Midterm #2 on Plant Biology 11/4/02 Professor Carlson Student Name:__________________________________________________ 1 Bio 1B, Midterm #2 on Plant Biology, 11/4/2 Professor Carlson Multiple choice question examination 1. Which of the following statements is false? a. Eukaryotes have membrane bound nuclei b. The most primitive eukaryotes are bacteria c. Fungi are more closely related to animals than to plants d. Algae are included within a diverse group of eukaryotes called protists 2. Which of the following questions is false? a. Metabolism by cyanobacteria gave earth its first oxygen atmosphere 1.8 billion years ago b. Currently discussed theory on origin of chloroplast suggests that cyanobacteria-type
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