Isa Vocabulary

Front 1

Meristem

Back 1

Undifferentiated tissue in which active cell division takes place

Front 2

Differentiation

Back 2

Process in the development of cells in which they become specialized for various functions

Front 3

Plants five organs

Back 3

Leaves, stems, roots, flowers and fruits

Front 4

Primary meristem

Back 4

Also known as apical meristem, produces the cells that result in elongation of shoots and roots

Front 5

Secondary meristem

Back 5

Also known as lateral meristem, produces cells that result in increases in diameter

Front 6

Apical meristem

Back 6

The growing points at the tips of shoots

Front 7

Buds

Back 7

Small lateral or terminal protuberance on the stem of a plant that may develop into a flower or shoot; undeveloped flower or shoot

Front 8

Cambrium

Back 8

Layer(s) of meristematic cells that give rise to the phloem and xylem and allow for diameter increase in a tree

Front 9

Phloem

Back 9

Plant vascular tissue that conducts photosynthates; situated to the inside of the bark

Front 10

Xylem

Back 10

Main water-and mineral-conducting tissue in trees and other plants; provides structural support and becomes wood after lignifying

Front 11

Cork Cambrium

Back 11

Meristematic tissue from which cork and bark develop to the outside

Front 12

4 primary functions of xylem

Back 12

1. Conducting water and dissolved minerals; 2. Support the eight of the tree; 3. Storage of carbohydrate reserves; and 4. Defense against the spread of disease and decay

Front 13

Gymnosperm

Back 13

Plant with seeds exposed (ie: pines and spruces)

Front 14

Tracheid

Back 14

Elongated, tapering xylem cell, adapted for support

Front 15

Fibers

Back 15

Elongated, tapering, thick-walled cell that provides strength

Front 16

Parenchyma cells

Back 16

Thin-walled, living cells essential in photosynthesis and storage

Front 17

Vessels

Back 17

Stacked, tubelike, water-conducting cells in the xylem

Front 18

Ring porous

Back 18

Pattern of wood development in which the large-diameter vessels are concentrated in the earlywood

Front 19

Diffuse porous

Back 19

Pattern of wood development in which the vessels are distributed evenly throughout the annual ring

Front 20

Growth rings

Back 20

Rings of annual xylem visible in a cross section of the trunk of some trees