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STD 11 - 11. photosynthesis in higher plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 11. photosynthesis in higher plants1 Mark
MCQ
In kranz anatomy, the bundle sheath cells have
  • A
    thin walls, many intercellular spaces and no chloroplasts
  • ✓
    thick walls, no intercellular spaces and large number of chloroplasts
  • C
    thin walls, no intercellular spaces and several chloroplasts
  • D
    thick walls, many intercellular spaces and few chloroplasts.
✓

Answer

Correct option: B.
thick walls, no intercellular spaces and large number of chloroplasts
b
(b) : The $C_4$ plants are adapted to dry tropical regions and have greater productivity of biomass. They have special type of leaf anatomy known as Kranz anatomy. In this type of anatomy the bundlesheath cells form several layers around the vascular bundles; they are characterised by having a large number of chloroplasts, thick walls impervious to gaseous exchange and no intercellular spaces.

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