A : Sieve tubes and companion cells are relat | vedclass

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(A) Sieve tubes and companion cells are ontogenetically related because they both originate from the same mother cell through a series of divisions.Sp

Vedclass · Accepted Answer

Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) Sieve tubes and companion cells are ontogenetically related because they both originate from the same mother cell through a series of divisions.Specifically,a single mother cell undergoes an unequal division to produce a smaller cell that differentiates into a companion cell and a larger cell that differentiates into a sieve tube element.Therefore,both the Assertion and the Reason are correct,and the Reason provides the correct explanation for the Assertion.

$A$ : Sieve tubes and companion cells are related ontogenetically.
$R$ : Both develop from same mother cell.

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$A$ : Sieve tubes and companion cells are related ontogenetically.$R$ : Both develop from same mother cell.