28. The STEM of a plant is that structure that is usually erect and found above the ground . It usually has leaves at regular intervals and a terminal bud at the growing point .
42. xylem Carries water and minerals up to the stem. Water is done by OSMOSIS whilst Minerals by ACTIVE TRANSPORT The XYLEM transports only in one direction ... which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY which way? UP or DOWN? WHY
43. phloem Carries sugars produced by the process of ___________ Q: Do the roots need Sugar (food) ? For what? Q: Do flowers need Sugar? Q: So in what direction is sugar translocated (transported) inside the Phloem?
44. CORTEX CORTEX is layer is the food storage system of the root, called packing tissue . It is also found in the stem.
46. PITH PITCH is the CENTRAL tissue of the stem These tissues serve also as supporting tissue and contribute to the stem’s rigidity.
47. CAMBIUM CAMBIUM is a thin layer of cells, which separates the xylem from the phloem . These cells can divide, thus increasing its diameter of the stem, known as Secondary thickening. XYLEM PHLOEM