ROOT-STEM TRANSITION
•
Understand Root-Stem Transition in Plants
•
Different types of Root-Stem Transitions
•
Fumaria
Type
•
Cucurbita
Type
•
Lathyrus
Type
•
Annemarrhena
Type
Learning objectives:
Root and stem are continuous but the arrangement of vascular bundles is different
In Stem: Conjoint and Collateral
In Root: Radial
At a specific portion known as ‘
transition region
’ there will be transition between
these types
Root-Stem Transition
Following ‘all or some’ activities may takes place during transition
Forking- Splitting in vascular bundle (VB)
Rotation- 180
0
change in orientation of VB
Fusion- Fusion of two or more VB
Multiplication- Increase in number of VB
Root-Stem Transition
Thank You
Root-stem transitions in plants entail intricate changes in vascular bundle arrangements, leading to unique types like Fumaria, Cucurbita, Lathyrus, and Annemarrhena. Learn about the continuous nature of roots and stems, the transition region, and activities during this process including forking, rotation, fusion, and multiplication of vascular bundles.
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Presentation Transcript
ROOT-STEM TRANSITION Dr. Dr. Dheeraj Dheeraj Kumar Singh Kumar Singh Assistant Professor Department of Botany Harish Chandra PG College Varanasi 221001
Learning objectives: Understand Root-Stem Transition in Plants Different types of Root-Stem Transitions Fumaria Type Cucurbita Type Lathyrus Type Annemarrhena Type
Root-Stem Transition Root and stem are continuous but the arrangement of vascular bundles is different In Stem: Conjoint and Collateral In Root: Radial At a specific portion known as transition region there will be transition between these types
Root-Stem Transition Following all or some activities may takes place during transition Forking- Splitting in vascular bundle (VB) Rotation- 1800 change in orientation of VB Fusion- Fusion of two or more VB Multiplication- Increase in number of VB
