31. small openings in the epidermis that allow carbon dioxide, water and oxygen to diffuse into and out of the leaf are known as

a. stomata

b. phloem

c. xylem

d. meristems

32. vascular tissue that conducts water and minerals from the roots to all parts of the plant is known as

a. stomata

b. phloem

c. xylem

d. meristems

33. the regions of unspecialized cells that undergo mitosis to create new cells are called

a. stomata

b. phloem

c. xylem

d. meristems