[" 37.Passage cells are thin-walled cells found in: "],[qquad " [AIPMT (Prelims)-2007"],[" (1) Central region of style through which the pollen "],[" tube grows towards the ovary."],[" (2) Endodermis of roots facilitating rapid transport "],[" of watem elements that serve as entry points for "],[" substances for transport to other plant parts."],[" (4) Testa of seed to enable emergence of growing "],[" embryonic axis during seed germination "]