Question:
In Kranz anatomy, the bundle sheath cells have
In Kranz anatomy, the bundle sheath cells have
Updated On: Jul 28, 2022
- thin walls, many intercellular space and no chloroplast
- thick walls, no intercellular spaces and large number of chloroplasts
- thin walls, no intercellular spaces and several chloroplasts
- thick walls, many intercellular space and few chloroplasts
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The Correct Option is B
Solution and Explanation
$ C_{4} $ -plants have 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 a chloroplast, thick walls impervious to gaseous exchange and no intercellular spaces.
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Concepts Used:
C4 Pathway
- Every photosynthetic plant moves according to the Calvin cycle, but in some plants, there is a primary stage to the Calvin Cycle called the C4 pathway. Plants in tropical desert regions commonly move accordingly to the C4 pathway. Here, a 4-carbon compound called oxaloacetic acid (OAA) is the first product of carbon fixation. Such plants are special and have specific adaptations as well.
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