BILD2_Lecture_3_8_12

BILD2_Lecture_3_8_12 - 3/8/2012 Video Recording is in...

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3/8/2012 1 Video Recording is in progress today as part of teaching evaluation Students who do not wish to be filmed may sit in the left side of the classroom 3-8-2012 Dr. Cawas Engineer I. Plant Structure: Root, Shoot, Leaf, Flower, and Single Plant Cell Plant Tissues: 3 Main types II. Plant Growth: Meristems, Primary Growth and Secondary Growth III. Flower Development: ABC Model Office Hours: Friday 3-9-2012 , 11A.M. to Noon and Friday 3-16-2012 , 11A.M. to Noon 5th floor of MUIR Biology, Room: 5125A
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3/8/2012 2 Plants are amazing Bristlecone pine I. Plant Structure Shoot and root systems and their functions Leaf, root and flower cross sections A typical plant cell II. Plant Tissues What constitutes a plant?
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3/8/2012 3 I. PLANT STRUCTURE A. FUNCTIONS OF A SHOOT SYSTEM - reach light - photosynthesis - transpiration - gas exchange B. FUNCTIONS OF A ROOT SYSTEM - nutrient uptake - H2O uptake - anchoring - storage Figure 35.2 II. PLANT TISSUES A. DERMAL TISSUE Single layer: protection Soil nutrition B. VASCULAR TISSUE Water & nutrient transport Xylem: root to leaf Phloem: source to sink (sugars) C. GROUND TISSUE Between epidermis & vascular system Metabolism; support; storage Figure 35.8 I. PLANT STRUCTURE Root Hairs: STRUCTURE OF A ROOT Figure 35.3 Figure 35.13 Key to labels Dermal Ground Vascular Cuticle Bundle- sheath cell Xylem Phloem Sclerenchyma fibers Stoma Upper epidermis Palisade mesophyll Spongy mesophyll Lower epidermis Cuticle Vein Guard cells Figure 35.18 STRUCTURE OF A LEAF:
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3/8/2012 4 What makes a plant cell unique? UNIQUE FEATURES OF A PLANT CELL I. PLANT STRUCTURE Figure 6.28 I. PLANT STRUCTURE STRUCTURE OF A PLANT CELL CELL WALL - like connective tissue - cell shape - rigid support - defense VACUOLE - storage organelle - cell expansion - waste products - lysosome (defense) TOTIPOTENCY - regeneration of whole plant from a single cell Figure 38.2a Stamen Anther Filament Petal Receptacle Stigma Style Ovary Carpel Sepal (a) Structure of an idealized flower STRUCTURE OF A FLOWER: I. PLANT STRUCTURE
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3/8/2012 5 Flower Structure and Function • Flowers are the reproductive shoots of the plant; they attach to a part of the stem called the receptacle • Flowers consist of four floral organs: sepals , petals , stamens , and carpels • Stamens and carpels are reproductive organs; sepals and petals are sterile I. PLANT STRUCTURE • A stamen consists of a filament topped by an anther with pollen sacs that produce pollen • A carpel has a long style with a stigma on which pollen may land • At the base of the style is an ovary containing one or more ovules
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This note was uploaded on 04/05/2012 for the course BILD 2 taught by Professor Schroeder during the Winter '08 term at UCSD.

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BILD2_Lecture_3_8_12 - 3/8/2012 Video Recording is in...

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