Plant Structure & Function 2

Plant Structure & Function 2 - Plant Anatomy and...

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Click to edit Master subtitle style Plant Anatomy and Physiology Chapters 42, 43 and 44
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Review: 2 Classes of Angiosperms 1. Monocots (Monocotyledonae or Liliopsida) 2. Dicots (Dicotyledonae or Magnoliopsida)
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Review: Differences Between A. Flower Parts Monocots - The flower parts are in 3s or in multiples of 3s Dicots - The flower parts come in 4 or 5 or in multiples of 4 or 5
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B. Leaves Monocots - Leaves have smooth edges and often narrow shape with parallel veins Dicots - Leaves are oval or palmate (hand-like) shape with netlike veins
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C. Vascular Tissue ( Vein ) Arrangement n Vascular Tissue - transports water and sugar Monocots - vascular bundles are scattered throughout the stem and in the leaves they run parallel in direction Dicots - vascular bundles are arranged in a ring around the stem and their leaves have a netted appearance due to the arrangement of the vascular tissue
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D. Root Pattern Monocots - a fibrous root system - the roots spread out Dicots - a taproot system - The roots go deep
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E. Embryo Cotyledons A cotyledon is a seed leaf . n It stores food for the plant to use once it first germinates and has not yet developed true leaves yet. n True leaves have vascular tissue while the cotyledon does not. Monocots - One cotyledon Dicots - Two cotyledons
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Flowers Dicots Monocots Roots Stems Leaves Seeds embry o cotyledo n cotyledon s embry o
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The Function of Meristematic Tissues n From the moment they sprout, plants are composites of two fundamentally different categories of cells: 1. Meristem cells 2. Differentiated cells
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Meristem Cell n A meristem cell continues to multiply throughout the plants entire life. n Some meristem cells stop dividing at a certain point. Example: Flower parts, leaves
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The Location of Meristamatic Tissues 2 Major Types of Meristem cells: 1. Apical Meristems 2. Lateral Meristems
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1. Apical Meristems n tip meristems” are located in the ends of roots and shoots , including main stems and branches. n This is where the growth in height of a plant takes place.
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2. Lateral Meristems n side meristems”, also called cambia (singular cambium), forms cylinders that run parallel to the long axis of roots and stems. n This is where the growth in girth of
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You and a friend carve your initials 5 feet above the ground on a tree on campus. The tree is now 40 feet tall. When you come back for your twenty-fifth reunion, the tree will be 100 feet tall. How high above the ground should you look for your initials? 1. 5 feet 2. 40 feet 3. 60 feet 4. 95 feet 5. 100 feet
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The Main Functions of Xylem and Phloem n The vascular tissue is the transport tissue, which is made up of xylem and phloem.
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Xylem n Xylem is a thick walled conducting tissue of vascular plants that transports water and minerals.
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n Phloem
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This note was uploaded on 05/27/2011 for the course BIO 112 taught by Professor Kirkpatrick during the Spring '11 term at Moraine Valley Community College.

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Plant Structure & Function 2 - Plant Anatomy and...

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