Chapter 26

Roots and shoots lengthen through activity at ______. a. apical meristems b. lateral meristems c. vascular cambium d. cork cambium

In many plant species, older roots and stems thicken by activity at _______. a. apical meristems b. cork cambium c. vascular cambium d. both b and c

_______ conducts water and ions; _______ conducts food. a. Phloem; xylem b. Cambium; phloem c. Xylem; phloem d. Xylem; cambium

Mesophyll consists of ______. a. waxes and cutin b. lignified cell walls c. photosynthetic cells d. cork but not bark

In phloem, organic compounds flow through ______. a. collenchyma cells b. sieve tubes c. vessels d. tracheids

Xylem and phloem are ______ tissues. a. ground b. vascular c. dermal d. both b and c

Match each plant parts with a suitable description. _____apical meristem _____lateral meristem _____xylem _____phloem _____vascular cylinder _____wood a. massive secondary growth b. source of primary growth c. distribution of sugars d. source of secondary growth e. distribution of water f. central column in roots