Practice question

Racemose inflorescence is indeterminate where main axis peduncle or rachis grows indefinitely via continuous apical meristem activity, lateral flowers arise acropetally younger toward apex older toward base without terminating apex in flower. This unlimited growth contrasts with cymose where apex converts into flower ceasing extension. Basipetal succession and terminal flower define cymose. Racemose includes raceme, spike, catkin, corymb, umbel, spadix as variants of same monopodial principle. Mustard raceme exemplifies unlimited axis elongating even after first flowers open, enhancing flower number and prolonged blooming period adapted for sustained pollinator visitation.