plants, roots, leaves, stems, hormones, tropisms, and PSN

NOT SCANATRON fill-in-the-blank, pictures of leave/ root, know functions, no short answer

vascular tissue

inner of roots, stems, leaves (xylem and phloem)

dermal tissue

outer layer of roots, stems, leaves

ground tissue

roots, stems, leaves

meristematic

rapid growth, mitosis

functions of roots

absorb water and dissolved nutrients, anchor the plant, hold the plant upright

functions of stems

transports substances through plants, holds leaves upright/support, heigh

functions of leaves

photosynthesis, pores exchange O2 and CO2 while conserving H2O

epidermis

outer covering of a root

root hairs

projections from the epidermis that provide surface area for absorption

endodermis

layer between cortex and vascular cylinder

osmosis

water gets into the root by ----------

Casparian strip

located in the endodermis, prevents water from moving backwards

transpiration

movement of water through the plant

xylem moves

one way

sieve tubes

conducting strands in phloem cells

translocation

movement of organic substances within a plant from source to sink

phloem moves

two ways

parenchyma

thin cell walls, large central vacuoles, thing layer of cytoplasm

collenchyma

strong, flexible cell walls that support large plants

sclerenchyma

extremely thick, rigid cell walls that make tissue tough and strong

woody stems

trees and shrubs, such as pines, oaks, roses, and hollies

heartwood

wood in the center of a mature stem or tree trunk, xylem within it can no longer conduct water, so they provide support

sapwood

lies outside heartwood, contains vessel cells that can conduct water

dormancy

condition in which a plant or seed remains inactive

Carbon dioxide, water

reactants for PSN

sugars, oxygen

products of PSN

Calvin Cycle

inorganic carbon is incorporated into organic molecules