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BSC 101 Helms Week 7 Lecture Notes 9/28-10/2

by: Daniel Hemenway

BSC 101 Helms Week 7 Lecture Notes 9/28-10/2 BSC 101

Marketplace > Illinois State University > Biological Sciences > BSC 101 > BSC 101 Helms Week 7 Lecture Notes 9 28 10 2
Daniel Hemenway
GPA 3.93
Concepts in Biology
Dr. Helms

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I am an Elite Note Taker and I will be posting notes each week, along with study guides for exams for BSC 101 (Helms), ACC 131 (Seipp), and ECO 105 (Goel). Give them a look and refer your friends ...
Concepts in Biology
Dr. Helms
Class Notes
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This 4 page Class Notes was uploaded by Daniel Hemenway on Saturday October 3, 2015. The Class Notes belongs to BSC 101 at Illinois State University taught by Dr. Helms in Summer 2015. Since its upload, it has received 59 views. For similar materials see Concepts in Biology in Biological Sciences at Illinois State University.

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Date Created: 10/03/15
BSC 101 Helms 928102 Chapter 12 Coursepack Notetaking Guides Page 113 Coffee comes from the roasted seeds of the coffee plant Coffea arabica Plant is 612 feet tall flowers after 34 years Coursepack Notetaking Guides Page 114 Growth form a plant s shape structure and appearance There are 5 general forms but not all plants fit into these Some don t follow any of these forms Woody Plant Grow by adding wood 1 Trees large main vertical trunk supporting multiple branches 2 Shrubs many small branches near base 3 Succulents all about storing large amounts of water in roots and stem Coursepack Notetaking Guides Page 115 Herbaceous plants photo on L is an example of an herbaceous that doesn t follow quotgrasslike or quotvinequot 4 Grasslike slender stems narrow leaves wind pollinated Examples wheat rice grass 5 Vines use ground or other structures for support Examples Pumpkins Coursepack Notetaking Guides Page 116 Life history of plants Annuals seed to seed in one growing period herbaceous Example Pumpkin broccoli cucumber corn Biennials Every two years seed gt adult gt dormant gt reproduction Example Parsley Perennials Live for more than 2 years can be herbaceous or woody repeated episodes of reproduction Examples Herbaceous Blueberry Raspberry Woody Apple Tree Orange Tree Coursepack Notetaking Guides Page 117 Generalizations Don t necessarily represent mutually exclusive categories BSC 101 Helms 928102 Coursepack Notetaking Guides Page 118 Note that plants DO have mitochondria because they DO do cellular respiration Structures are NOT found in animal cells Cell Wall Cellulose Structure Blockiness Vacuole Organelle of storage Takes up large part of it Interact with cell wall Support of cell wall to help shape Recycling other organelles Examples water minerals starch Chloroplasts Organelle of photosynthesis Chlorophyll makes them appear green Aerobic Cellular Respiration ATP Photosynthesis convert energy from light into sugars Mitochondria convert sugar and oxygen to C02 water and ATP Coursepack Notetaking Guides Page 120 Plant growth occurs at specific locations in the plant body called meristems Meristems rapid cell division via mitosis increase in the number of cells Apical Meristem Tip of shoot or root lengthwidth Lateral buds meristematic on side of stem where flowers develop Herbaceous plants grow only from apical meristems Coursepack Notetaking Guides Page 121 Woody plants on the other hand also have two additional meristems called vascular cambium and cork cambium Vascular Cambium Produces wood xylem phloem Cork Cambium Divide to make outer protective layer Inside produces living storage cells Bark everything outside the vascular cambium BSC 101 Helms 928102 Coursepack Notetaking Guides Page 122 Epidermis Protects from outside direct contact with environment Cork outer portion Fibers Storage and support tissues very long and narrow Structural support Example Stems and leaves Parenchyma Plant tissue consisting of very large and versatile cells Store many things in leaves chloroplasts Vascular system moving nutrients around Xylem Water and minerals Phloem Sugar Coursepack Notetaking Guides Page 124 Plants can be broadly divided into root and shoot systems each having different organs and functions Roots system Water and mineral uptake then distribution Two types of systems Taproot Relatively thick rots usually 1 really big root specialized in storage mainly starch Fibrous root system generally all the same size many stringy roots Both types of root systems have Root cap Dome of epidermal cells at the tip of the root protective layer Root hairs Extensions of the epidermal cells of that root For absorption Absorb 90 of the plant s water Cortex Specialized cells for starch storage Endodermis Controlling passage of things into the vascular cylinder Vascular cylinder phloem and xylem Coursepack Notetaking Guides Page 125 Stems have vascular tissues too but they are arranged differently than we just saw in roots Monocots epidermis vascular bundles scattered throughout the stem no pattern Dicots shows ring of vascular tissue BSC 101 Helms 928102 Coursepack Notetaking Guides Page 126 Annual growth ring lateral meristems epidermis replaced by cork Coursepack Notetaking Guides Page 127 Leaves Major photosynthetic organ of most plants Have openings for gas exchange Stomata Stomata openings in leaf and some stems major area of gas exchange Mesophyll space between upper and lower middle region of leaf Dominated by parenchyma cells that contain chloroplasts Coursepack Notetaking Guides Page 128 Pathogens viruses bacteria fungi worms Coursepack Notetaking Guides Page 129 Plants have evolved defensive strategies Structural Barriers Thorns Spikes Thick waxy leaves Chemical Weapons Alkaloidsexamples morphine caffeine Terpenoidsexamples cedar oil nutmeg ginger oregano Cyanogensexample Cyanide


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