Primary growth occurs at ____ and secondary growth occurs at ____.

A) apical tissue; lateral tissue
B) apical meristems; lateral meristems
C) primary meristems; secondary meristems
D) vascular cambium; cork cambium
E) lateral meristems; apical meristems

Primary growth occurs at apical meristems, which are found at the tips of roots and shoots, while secondary growth occurs at lateral meristems, such as the vascular cambium and cork cambium, which are found in the stems and roots of woody plants. Therefore, option B, which specifies that primary growth occurs at apical meristems and secondary growth occurs at lateral meristems, is the correct answer.