How does the supply of nitrogen in grains take place? (a) From old leaves (b) From plant roots (c) From stem (d) By photosynthesis

How does the supply of nitrogen in grains take place?
(a) From old leaves
(b) From plant roots
(c) From stem
(d) By photosynthesis
by

1 Answer

Answer :

(a) From old leaves
by

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