Chapter 27

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

_____ conducts mainly water and mineral ions, and _______ conducts mainly sugars. a. Phloem; xylem b. Xylem; phloem

The bulk of a leaf is made up of mesophyll, a type of ______ a. sclerenchyma b. parenchyma c. collenchyma d. dermal tissue

Which of the following cell types are alive in mature tissue? Choose all that apply. a. collenchyma cells b. sieve tubes c. vessels d. tracheids e. companion cells f. sclerenchyma cells

Water evaporation from plant parts is called _______ a. translocation b. cohesion c. cork d. all of the above

When guard cells swell, ______ a. transpiration ceases b. sugars enter phloem c. a stoma opens d. root cells die

A waxy cuticle is secreted by _______ a. ground tissue b. epidermal cells c. a stoma d. root hairs

Plants obtain carbon, hydrogen, and oxygen from _______ a. soil b. water c. air d. b and c

Decomposing matter in soil is called_______

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

Water transport from roots to leaves occurs by _______ a. pressure flow b. differences in source and sink solute concentrations c. the pumping force of xylem vessels d. transpiration, tension, and cohesion of water

Sugar transport from leaves to roots occurs by ________ a. pressure flow b. differences in source and sink solute concentrations c. the pumping force of xylem vessels d. transpiration, tension, and cohesion of water