A: Soybean exports the fixed nitrogen as urei | vedclass

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(C) The Assertion $(A)$ is correct because plants like soybean export the fixed nitrogen in the form of ureides,which have a particularly high nitroge

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Assertion is correct,but Reason is incorrect.

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(C) The Assertion $(A)$ is correct because plants like soybean export the fixed nitrogen in the form of ureides,which have a particularly high nitrogen to carbon ratio.The Reason $(R)$ is incorrect because both amides and ureides are transported primarily through the xylem vessels,not the phloem sieve tubes. The phloem is primarily responsible for the translocation of sugars and organic nutrients from source to sink.

$A$: Soybean exports the fixed nitrogen as ureides.
$R$: Amides contain excess nitrogen and they are transported via phloem sieve tubes.

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$A$: Soybean exports the fixed nitrogen as ureides.$R$: Amides contain excess nitrogen and they are transported via phloem sieve tubes.