Problem 11
The main function of root hairs is to a. conduct water from cortex to aboveground shoots b. increase the root's surface area for absorption c. anchor the plant in soil
Problem 12
Roots and shoots lengthen through activity at a. apical meristems c. vascular cambium b. lateral meristems d. cork cambium
Problem 13
The activity of lateral meristems older roots and stems. a. lengthens b. thickens c. both a and b
Problem 14
Tree rings occur because a. there are droughts during the time the rings form b. environmental conditions influence xylem cell size c. heartwood alternates with sapwood d. periderm replaces epidermis
Problem 15
Match the plant parts with the best description. vascular cambium \(\quad\) a. ground tissue mesophyll \(\quad\) b. type of stem wood c. a lateral meristem cortex d. photosynthetic parenchyma potato e. secondary xylem parallel veins \(\mathrm{f}\), formed by epidermal cells stomata g. characteristic of monocor leaves
