Relations and Functions: This article is an informative source for students from Class 9 to Class 12 to understand the definition, formula, calculation and more for the Relation and Functions.

Ray F. Evert, Sieve-Tube Structure in Relation to Function, BioScience, Vol. 32, No. 10 (Nov., 1982), pp. 789-795 ...

Barbara J. Bentwood, James Cronshaw, Cytochemical Localization of Adenosine Triphosphatase in the Phloem of Pisum sativum and its Relation to the Function of Transfer Cells, Planta, Vol. 140, No. 2 ...