Download The Stem

The Stem
Develops from plumule
SHOOT: portion bearing
leaves
Node, Internode, bud, flowers
Types( on the length of life)
1.Annuals
2.Biennials
For one
Season
Wheat, Rice
2 seasons
Radish, Turnip
Istudy.pk
3.Perennials
Many years
woody plants
Stem: types
On the basis of size, habit, soft and woody
Trees
Herbs
Shrubs
Colummar
Unbranched,
Crown of leaves
At top. Palm
Excurrent
Branched, max girdth
Tapering towards apex
Polyalthia
Deliquescent
Divide and
Redivide
Mango
Stem: types
Colummar
Unbranched,
Crown of leaves
At top. Palm
Excurrent
Branched, max girdth
Tapering towards apex
Polyalthia
Deliquescent
Divide and
Redivide
Mango
Stem: types
On the basis of size, habit, soft and woody
Herbs
Soft stem, small
in size
Radish, Mint,
Mustard
Shrubs
Woody, bushy
in nature,
stem
branched near
ground
Rose, Jasmine
Trees
Tall, woody,
perennials.
Mango,
Peepal
Colummar
Unbranched,
Crown of leaves
At top. Palm
Excurrent
Branched, max girdth
Tapering towards apex
Polyalthia
Deliquescent
Divide and
Redivide
Mango
Stem: types
On the basis of form and nature
Herbacous
Soft stem,
small in size
Radish, Mint,
Mustard
Woody
hard
Fistular
Internode
hollow
Bamboo
Jionted
Swollen at
internodes
Grasses
Succulent
Thick and
fleshy
Opuntia
Spiny
Acacia
Lateral
Sides
Terminal
At the apex
Axillary
Axil of a leaf
Accessory
More than one
in axil central
one is
Reduced
Small
green
Radish
Climbing upsupport
Erect
Forms
Strong
Weak
Unable to erect
2.
3.
Horizontal no
daughter plants
Horizontal, aerial
shoots Grass
Climbing upsupport
Climbing upsupport
Cuscuta
Curved kooks
Bougainvillia
Prostrate, long
internodes, nodes
scale leaves. Bud
develop into erect
leafy shoots
Underground
erect
Mint
Elongated,
distinct node
and internode.
Each node small
bud
Thread like,
Cucumber
Axillary
branches
hard and
pointed.
Orange
Flowers
Axillary
buds into
swollen
Lilium
Phyloclade
and Cladodes
Stem leaflike
many nodes
Single node
cladodes
(Asparagus)