Plant Structure

• Where are vascular bundles in the stem of a dicot and why?

  Around the edges to give strength and support
• Where are the vascular bundles in the root of a dicot and why?

  In the middle to help the plant withstand the tugging strains that result as the stems and leaves are blown in the wind
• Where is the main vein carrying the vascular bundle of a dicot's leaf found and why?

  The midrib of the leaf in order to help support the structure of the leaf
• What other vascular tissues are found in a dicot leaf apart from the main vein?

  Many small, branching veins which spread throughout the leaf and function in both transport and support
• How is the main vascular bundle structured in the leaf of a dicot?

  Xylem above phloem, vascular bundle roughly circular cross-section
• How is the vascular bundle structured in the stem of a dicot?

  Phloem on the outside, xylem on the inside, separated by a strip called the procambium (or just cambium)
• What is the bit in the middle of a dicot stem called?

  Pith
• What is the area between vascular bundles in a dicot stem called?

  Interfasicular parenchyma
• What is the outermost layer of a plant stem called?

  Epidermis
• How is the vascular bundle of a dicot root arranged?

  A 'X' shaped xylem with phloem vessels in the gaps of the X, with a ring called the endodermis enclosing all this
• What is the tissue immediately surrounding a vascular bundle in a dicot root called?

  Endodermis
• What is the outermost layer of a dicot root called?

  Exodermis
• What layer is found immediately below the exodermis of a plant root?

  Epidermis
• What is the area between the vascular bundles and epidermis in a dicot root and stem called?

  Cortex