STEM MORPHOLOGY. Shoot tip Leaf scar Young leaf Stipule Lateral vein Leaf margin Pulvinus Petiole...

STEM MORPHOLOG

Y

Shoot tip

Leaf scar

Young leaf

Stipule

Lateral vein

Leaf margin

Pulvinus

Petiole (leaf stalk)

Leaf base

Midrib

Adventitious roots

Abscission zone

Internode

Soil surface

Transition zone

Axillary bud

Node

Primary lateral root

Tap root

Secondary lateral root

Leaf tip

Axillary bud

Leaf

Root

Stem

Parts of Root, Stem and Leaf

new corm

old corm

BULB

RHIZOME

CORM

TUBER

axillary bud

internode

scale leaf

node

adventitious roots

tuber

axillary bud

adventitious roots

stem

axillary bud terminal bud

scale leaf

axillary bud

STEM MODIFICATIONS

Ginger - rhizome Potato- tuber

Gladiolus - corm Onion - bulb

STOLON

SUCKERSUCKER

RUNNER

stolon runner

suckernew rhizome old rhizome

sucker

Banana - suckers

Stolons Runners

CLADODE

cladodeAsparagus

Stem modification Leaf modification

Thorn

STEM BRANCHING

shoot tip/apex

main stem

lateral branch

- Indefinite- Racemose- Monopodial

dead shoot tip

BiparousScorpiod (Zigzag) Helicoid (helix)

Uniparous

Cymose/Definite

Zigzag branching

TENDRILS

tendrils

Cymose/Definite

Monopodial/Racemose/Indefinite