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6.Anatomy of Flowering Plants
normal
Bundle sheath cells
A
are rich in $PEP$ carboxylase
B
lack $RuBisCO$
C
lack both $RuBisCO$ and $PEP$ carboxylase
D
are rich in $RuBisCO.$
(NEET-2013)
Solution
(d): $C_4$ plants show kranz type of anatomy. In kranz anatomy, the mesophyll is undifferentiated and its cells occur in concentric layers around vascularbundles. The vascular bundles are surrounded by large sized bundle sheath cells which are arranged in wreath like manner in one to several layers. In $C_4$ plants thereare two carboxylation reactions, first in mesophyllchloroplast and second in bundle sheath chloroplast. $RuBP$ is present in bundle sheath chloroplasts where $C_3$ cycle takes place.
Standard 11
Biology
