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- ON Section: PLANT PRIMARY GROWTH AND DEVELOPMENT Review the image of the Coleus stem tip, longitudinal section, in Exercise 4.2. then answer the questions below: Describe the changes in cell size and structure in the stem tip. Begin with the youngest cells at the apex (tip) and continue to the xylem cells.Examine an image of longitudinal section the rough a Coleus stem tip. Can you find a node where procambium diverges in to the leaf primordium?Below is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. young 100x (.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchyma
- Below is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. young 100x (x.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchymaBelow is a series of pictures of the stem (x.s.) of a sunflower, Helianthus sp. Note that it shows both a young stem and older stem. E- young 100x (x.s.) older 100x (x.s.) Make a sketch of both ages and upload it here with the following structures labeled: epidermis, cortex, pith, vascular bundles, fibers, primary xylem, primary phloem, tracheids, vessel elements, collenchymaFigure 3.31 shows a stem cross section of Hibiscus rosasinensis stem captured at LPO. Label the visible parts of the stem and provide appropriate description.