Q19 / 120 · NEET 2011 (Mains) · Botany

In Kranz anatomy, the bundle sheath cells have

  • A
    thin walls, many intercellular spaces and no chloroplasts
  • Correct answer
    B
    thick walls, no intercellular spaces and large number of chloroplasts
  • C
    thin walls, no intercellular spaces and several chloroplasts
  • D
    thick walls, many intercellular space and few chloroplasts

Solution

$\mathrm{C}_4$ plants have a characteristic leaf anatomy, called 'Kranz' anatomy. Kranz means 'wreath' (ring) and is a reflection of the arrangement of cells. The large sized bundle sheath cells may form several layers around the vascular bundles. These cells are characterised by having a large number of agranal chloroplasts, thick walls impervious to gaseous exchange and no intercellular spaces.

Hence, the correct answer is option: 'B'.

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