Luther Prep Biology Chapter 21

Front 1

blade

Back 1

broad part of a leaf where most of the photosynthesis of a plant takes place

Front 2

cohesion-tension theory

Back 2

theory that explains how the physical properties of water allow it to move through the xylem of plants

Front 3

fibrous root

Back 3

root system made up of many threadlike members of more or less equal length

Front 4

meristem

Back 4

undifferentiated plant tissue from which new cells are formed

Front 5

petiole

Back 5

stalk that attaches a leaf blade to a stem

Front 6

phloem

Back 6

tissue that transports sugars in vascular plants

Front 7

pressure-flow model

Back 7

model for predicting how sugars are transported from photosynthetic tissue to the rest of a plant

Front 8

primary growth

Back 8

growth in vascular plants resulting in elongation of the plant body

Front 9

root cap

Back 9

mass of cells that covers and protects the tips of plant roots

Front 10

root hair

Back 10

thin hairlike outgrowth of an epidermal cell of a plant rood that absorbs water and minerals from the soil

Front 11

secondary growth

Back 11

growth in woody plants resulting in wider roots, branches, and stems

Front 12

taproot

Back 12

main root of some plants, usually larger than other roots and growing straight down from a stem

Front 13

transpiration

Back 13

release of vapor through the pores of the skin or stomata of plant tissue

Front 14

vascular cylinder

Back 14

supportive and conductive tissue in plants, consisting of xylem and phloem

Front 15

xylem

Back 15

tissue that transports water and dissolved minerals in vascular plants