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Lab 32 Plant Anatomy: Stems and Roots

Lab 32 Plant Anatomy: Stems and Roots. Root. “Root tip with root hairs” slide Sketch and label root cap, epidermis and root hair. Types of roots. Sketch a monocot root Sketch a tap root. Cross sections of dicot root. Procedure 32.1 Sketch (dicot) root. Label root as shown.

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Lab 32 Plant Anatomy: Stems and Roots

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  1. Lab 32Plant Anatomy: Stems and Roots

  2. Root “Root tip with root hairs” slide Sketch and label root cap, epidermis and root hair

  3. Types of roots Sketch a monocot root Sketch a tap root

  4. Cross sections of dicot root Procedure 32.1 Sketch (dicot) root Label root as shown

  5. Cross sections of monocot root Procedure 32.1 Sketch slide of monocot root Label root as shown

  6. Modified roots Observe the specimens of modified roots: Prop roots Storage root

  7. External anatomy of a stem Sketch the stem of Liquidambar and label: Terminal bud Axillary bud Node Internode Leaf scar

  8. Shoot tip Examine slide of Coleus shoot tip Label: Shoot apical meristem Axillary bud meristems

  9. Cross section of dicot stem Procedure 32.3 Sketch Helianthus stem slide UNDER DISSECTING SCOPE and label pith, cortex, vascular bundle, epidermis Sketch UNDER COMPOUND SCOPE vascular bundle Phloem, sclerenchyma cells, and Xylem: tracheid and vessel elements

  10. Cross section of monocot stem Sketch Zea mays(corn) stem slide UNDER DISSECTING SCOPE label epidermis, vascular bundle “monkey face”, ground tissue Sketch UNDER COMPOUND SCOPE a vascular bundle and label Phloem: sieve tube element and companion cell, xylem (vessel element)

  11. Modified stems STOLONS or RUNNERS are horizontal stems that grow along the ground surface. They enable a plant to reproduce asexually, as plantlets form at nodes along their length. The RHIZOMES store food and, having buds, they can also spread and form new plants.

  12. Modified stems The potato plant has rhizomes that end in enlarged structures specialized for starch storage called TUBERS (aka potatoes) THORN is a modified stem Used for defense against herbivory

  13. End of chapter questions 3, 6, 8

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