Chemical Coordination and integration — BIOLOGY STD 11 Science — Question

$‘A’ $                                        $ ‘B’$

$(1) $ Auxin                        $(I)$ Ripening and maturity of fruits

$(2)$Gibberellin                 $(II)$Differentiation of xylem elements

$(3) $ Cytokinin                  $(III)$ Prevention of genetic and physiological dwarfism

$(4) $ Ethylene                   $(IV)$  Found from tumour tissue of tobacco

 $(1)$     $(2)$     $(3)$     $(4)$