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Bio Lecture 15 and 16: Plants 1+2

by: Kiara Reyes

Bio Lecture 15 and 16: Plants 1+2 BIO 209L-001

Kiara Reyes
GPA 2.9
Human Anatomy and Physiology I Lab - SL
Dr. Renee Kopulos

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About this Document

Usually I would put up Certain Lectures on their own, But because their are related in the same subject of Plants Combined them both. Enjoy
Human Anatomy and Physiology I Lab - SL
Dr. Renee Kopulos
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This 4 page Bundle was uploaded by Kiara Reyes on Friday October 2, 2015. The Bundle belongs to BIO 209L-001 at Northern Illinois University taught by Dr. Renee Kopulos in Summer 2015. Since its upload, it has received 24 views. For similar materials see Human Anatomy and Physiology I Lab - SL in Biological Sciences at Northern Illinois University.

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Date Created: 10/02/15
Lecture 15 Plants 1 1 Basic Characteristics 0 Shared Derived Characters of Plants Present in plants but not in common ancestor with Green Alge A Alternation of Generation 36 marl3911 n Fi 15 16quot l iiiTD quot 39 39 J U 2145545 l39 p g1er Eff l a firm rm it r r r E Sporophyte found on edges underneath the leaves B Multicellular Dependent Embryo Another name from land plants in embryophytes quotembryo plants C Apical Meristems Cell Division and specialization happen at root and shoot tips Meristem cell are Pluripotent can differential into many different cell types equivalent to stems cells in animals D Waxy Cutide Waterproof lipid layer on plant reduce water evaporation can also protect against pathogens helping them living in a terrestrial environment E Stomata Singular quotStomaquot Pares that can be openedclose Control water C02 and 02 exchange allows water to enterexit 2Major Plant Groups 3Non Vascular Plants Bryophytes exhibit alternation of generation like all plants But haploid n diploid 2n sporophyte is small most of what we see is the haploid gametophyte Can help soils maintain nitrogen Sphagnum moss or Peat Mass grows in wet marshes or bogs decoys very slowly when dead and can preserve dead animals Used for energy sources Contain huge chucks of earth soil carbon so important for taking C02 out of atmosphere and ghting climate change 4 Vascular Plants Phloem blush green distributes amino acid and sugar made in photosynthesis around the plant for all of its cells Xylem redish Move water and minerals taken up roots throughout plant Two Different Environment of Tree 1 gtWater absorb and nutrients from soil anchor the plant and hold it upright 2 gt Increase lightgathering surface area of the plant Primary site of Photosynthesisgt Gather light Plants link the above ground and below ground compartment of terrestrial ecosystem Forest dominated by treelike ferns and horsetails during the Devonian and carboniferous periods Causes signi cant reduction in atmospheric C02 resulting in global cooling Taking out and then into landwater Lecture 16 Plants 2 1Characteristics of seed Plants 0 Seed plants havemicroscope gametophyte g rim fij39H FJ ZFFMI39T H l I ti 1 l Pollen and seeds consurvive well on land Pollen grains do not need water to disperse They are moved by wind in mm A or animals 0 Seeds protect the embryo and contain food for their growing embryo that can be broken down to collect energy 2 Gymnosberms Included pine tree 0 In temperate regions many gymnosperms are evergreen 1 Always has their leaves never rarely fall out EX Cedars Cycads 3 Angiosperms Angiosperms are also called Flowering plant Characterized by Flowers and Fruits Flower is a structure for sexual reproductionmade to modi ed leaves gt eggsperm together 0 Structure that contains a seed and often helps in dispersal Help to move the seeds offsprings away from parents to not have to compete E 1r f k l i39lquot1 339lquot39 l Ovary develops into fruit luv 5 I i W 1 guy j C quoti 1 1 V WU p l J l l 919 39 a f wquot r l 7 4 397 l nquot 39 it fry in Wily 5 f quot3quot MLquot hit 543 r i v 7 fLTl l 39ll ifquotl39iik 39 g 53 2 E l Liam i is ailll I ll y ll39ltgi lll l llLl quot 39 Endosperm 3nprovides food to developing embryo and seedgt 3 sets of chromosomes 0 Two big groups of Angiosperms 1 Monocots gt Orchids Lilies Grasses Palms 2 Dicotsgt Roses Legumes many deciduous tree many fruits and Vegetables 4 Interactions Wind Pollination huge number of small light pollen odds some will land on the grasses or trees 0 Animal Pollination Stinking onto animal furs or eaten then passed through Flower traits that can increase tness gt order color reward foodattract pollinators animals 0 More pollinatorsgt more Seedoffsprings Seed Dispersal often in fruits Through wind or air Seeds set away for to help with better survival 0 Not all Animals help with seed dispersal many animals feed on plants Herbivoresgt Causes strong Natural Selection 0 Secondary Compound are plant chemicals that don t play a role in Primary Metabolism but often discourage herbivory Chemicals given off by plants that prevent animals from being eaten whether messing with their stomach system or produced enough toxic to possibly killmake the animal sick


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