more complex than the other plant organs for it performs and provides various functions. These functions are: * For mechanical support * For conduction of water * For conduction and storage of manufactured food * For continuous growth of the stem in thickness These functions are centered at the fibro vascular system that is composed of two major tissues‚ the xylem and the phloem. Internal Parts of Woody Stems 1. Protective layers In a young plant‚ the protective covering is
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and tracheids are used for conduction of water and numeral salts from roots to the leaves and other parts of the plant. Xylem parenchyma assists them in their task and also serves for food storage and wood fibres give proper rigidity to the xylem. Except wood parenchyma all other xylem elements are thick walled‚ lignified and dead and hence they also give mechanical strength to the plant body. The first formed xylem or Protoxylem consists of annular‚ spiral and scalariform vessels. It lies towards
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Anatomy 1 Lab FINAL EXAM ** Covers exercises 13‚ 14‚ 15‚ 16‚ 17‚ 18‚ 20‚ 21‚ 22‚ 23‚ 24‚ 25‚ 26‚ 27** Terms – Intro to Sensory Receptors (Lab 24) General senses – touch‚ pressure‚ changes in temperature‚ pain‚ blood pressure and stretching Special senses – taste‚ smell‚ sight‚ hearing‚ balance Punctate distribution – uneven distribution of sense receptors Stimuli are classified by type (modalities) such as light‚ heat‚ sound‚ pressure and specific chemicals Receptors – receiving units in
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* Plants live in two difference environments at the same time: * * air - stem and leaves‚ surrounded by air and where light‚ CO2‚ and oxygen. * soil - roots‚ supplies water and nutrients. * Each part of the plant has a specific function: * * leaves - carry out photosynthesis. * roots - anchor the plant & absorb water and soil nutrients. * stems - support the leaves and transport materials to other plant parts. * What does the plant
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PLANT TISSUES (pp 261-268) HOW ARE CELLS ORGANIZED IN PLANTS? I. MERISTEMATIC TISSUES A. APICAL MERISTEMS Primary Growth 1. Initials a. Occur near tips of roots and shoots b. Cells have thin walls‚ prominent nuclei‚ and small vacuoles c. Functions 1) Establish patterns of growth. • Leaf pattern. 2) Produce new‚ genetically healthy cells 3) Produce derivatives which in turn account for primary growth i.e. elongation. 2. Derivatives a. Protoderm - becomes
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Translocation of Organic Solutes Plants synthesize food materials by photosynthesis and store the same in the form of starch grains in the chloroplasts found in mesophyll cells. Then the found material is converted into simple sugars; then it is transported to regions where it is required – stem apex‚ young flower buds fruits and storage organs are the sites to which the organic food is translocated. The site of synthesis and the site of need are separated by time and space. The structures
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Reagan Purser Study Words on Quizlet http://quizlet.com/35745265/anatomy-ch-10-flash-cards/ Chapter 10: Somatic and Special Senses 1. Sensory Receptors: Detect environmental changes and trigger nerve impulses that travel on sensory pathways into the central nervous system for processing and interpretation. 2. Somatic Senses: Touch‚ pressure‚ temperature‚ and pain 3. Special Senses: Smell‚ taste‚ hearing‚ equilibrium‚ and vision 4. 5 groups of sensory receptors: Chemoreceptors‚ Pain receptors
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DICOT STEM Plants showing anomalous secondary growth can be studied in two main groups. (1) Those in which cambium of normal type is present and persists but by peculiarity or irregularity in its activity develop vascular tissues of unusual arrangement. (2) Those in which the normal cambium either does not develop or in soon replaced by another cambium. This abnormal cambium may either develop from cortex or pericycle and shows abnormal activity. NORMAL CAMBIUM WITH ABNORMAL ACTIVITY: Aristolochia
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of the specimen. -Then the layers of different plant tissues were observed again but that time more carefully and meticulously for detail. -The layers of different plant tissues were then drawn on paper with accurate portion of each layer to each other. RESULTS/OBSERVATIONS: *REFER TO PAGE 2 FOR DRAWING OF THE LAYERS OF DIFFERENT TISSUES IN THE ROOT‚ THAT IS‚ THE TISSUE MAP OF THE DICOT. ROOT. DISCUSSION: The root system of a flowering plant begins its development from the hypocotyl of the
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ANATOMY CARDIOVASCULAR SYSTEM TEST REVIEW LeGrotte 2014 1. Which wall of the heart is thickest and why? The myocardium (cardiac muscle)‚ is the thickest section of the heart wall and contains cardiomyocytes‚ the contractile cell of the heart. 2. What part of the heart is the pacemaker and why? The SA Node is located in the right atrium of the heart. It is made up of a group of cells (myocytes) positioned on the wall of the right atrium‚ at the center of the heart and near the entrance of the
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