In vascular plants, one difference between root and shoot systems is that a. root systems cannot undergo secondary growth. b. root systems undergo secondary growth, but do not form bark. c. root systems contain pronounced zones of cell elongation, whereas shoot systems do not. d. root systems can store food reserves, whereas stem structures do not.

Plant development is influenced by: A. quality of light only B. quality and quantity of light C. quality and duration of light D. quality, quantity and duration of light

Which of the following is false? a. Stems have vascular bundles, and roots have vascular cylinders. b. Lateral roots can arise from nodes on a root. c. Primary growth (lengthening) can occur at an axillary bud. d. Apical meristem gives rise to epidermal tissue, ground tissue, and vascular tissue. e. Wood is xylem that forms during secondary growth