SHOOT APEX

Question 1

points at which leaves are attached

Answer 1

nodes

Question 2

stem segments between nodes

Answer 2

internodes

Question 3

has the potential to form a lateral shoot

Answer 3

axillary bud

Question 4

located near the shoot tip and causes elongation of a young shoot

Answer 4

apical bud

Question 5

helps maintain dormancy in most non-apical bud

Answer 5

apical dominance

Question 6

structure that permit the passage of gas inward and outward

Answer 6

lenticels

Question 7

characteristic scar on stem axis made by leaf abscission

Answer 7

leaf scar

Question 8

small modified leaves for protection from desiccation

Answer 8

bud scales

Question 9

immature leaf on the shoot

Answer 9

leaf primordium

Question 10

the portion of the internodes above the node. made up of actively dividing cells responsible for the elongation of the monocot stem

Answer 10

intercalary meristem

Question 11

outer group consisting of one or more peripheral cell layer, these cells divide anticlinally

Answer 11

tunica

Question 12

lies below the tunica and initially has a single layer of cells

Answer 12

corpus

Question 13

dome-shaped mass of dividing cells at the shoot tip

Answer 13

shoot apical meristem

Question 14

models of tissue organization in the shoot apex

Answer 14

apical cell theory
histogen theory
tunica-corpus

Question 15

pteridophytes - base is directed towards the surface of the apex
gymnosperm - surface meristem

Answer 15

apical cell theory

Question 16

each develop from independent group of initials
meristems are destined from the beginning to produce certain tissues

Answer 16

histogen theory

Question 17

outermost

Answer 17

dermatogen

Question 18

central

Answer 18

plerome

Question 19

between dermatogen and plerome

Answer 19

periblem

Question 20

no constant relationship can be traced between the particular initials of the promeristem and the inner tissues of the shoot

Answer 20

tunica-corpus theory

Question 21

outermost layer
surrounds inner cell mass
anticlinal division

Answer 21

tunica

Question 22

inner cell mass
divides in all directions
enlarges in volume

Answer 22

corpus

Question 23

corpus = portions of tunica

Answer 23

central zone

Question 24

below central zone, becomes the pith

Answer 24

rib zone/pith rib meristem

Question 25

encircles the other zones, eumeristem

Answer 25

peripheral zone/peripheral meristem

Question 26

initiated by periclinal divisions at the side of the apical meristem

Answer 26

origin of leaves