A) walls of epidermis
B) longitudinal walls of xylem
C) all walls of endodermis
D) radial walls of endodermis
Correct Answer: C
Solution :
The innermost layer of cortex is called endodermis. It is made up of closely packed living cells characterised by the presence of peculiar band like thickenings made of lignin and suberin on their anticlinal (radial and transverse) walls. These bands are known as Casparian strips.
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