Q.
The main function of companion cell is:
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An Intiative by Sri Chaitanya
a
protection of sieve tubes
b
maintaining the pressure gradient in sieve tubes
c
providing mechanical support to the plant
d
transporting water and minerals
answer is B.
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Detailed Solution
The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls. The companion cells help in maintaining the pressure gradient in the sieve tubes.
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