11th Class Biology Anatomy of Flowering Plants

  • question_answer 36)
      What are the cells that make the leaves curl in plants during water stress?


                      (a) Radial Vascular Bundle The xylem and phloem are present on the separate radii of theroot. This arrangement of vascular bundle is known as radial vascular bundle. (b)Polyarch Xylem When many strands of xylem are present, it is referred to as polyarch condition-a characteristic feature of monocot root. (c) Well Developed Pith Dicot stem and monocot roots have well developed pith formedof parenchymatous cell with intercellular spaces..

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