SlideShare ist ein Scribd-Unternehmen logo
1 von 24
Presentation of Plant AnatomyPresentation of Plant Anatomy
Presented to;Presented to;
Mam TaibaMam Taiba
Presented by;Presented by;
Farrukh JamilFarrukh Jamil
Roll no;Roll no;
_001_001
Plant Tissues;Plant Tissues;
 Groups or masses of the cells that are alike inGroups or masses of the cells that are alike in
region, structure, and function form tissue.region, structure, and function form tissue.
From the study point of view, the tissues mayFrom the study point of view, the tissues may
be grouped into three principal groups;be grouped into three principal groups;
 1-Meristems or meristematic tissues.1-Meristems or meristematic tissues.
 2-Permanent tissues.2-Permanent tissues.
 3-Secretory tissues.3-Secretory tissues.
MeristemMeristem
 Meristem is a ‘Geek word Meristosis”Meristem is a ‘Geek word Meristosis”
meaning to divide.meaning to divide.
 A meristemic tissue consists of a group ofA meristemic tissue consists of a group of
cells which remain in a continuous state ofcells which remain in a continuous state of
division or they retain their power of division.division or they retain their power of division.
Meristem
Charectrstics of meristem;Charectrstics of meristem;
 Composed of immature cells which are state ofComposed of immature cells which are state of
division and growth.division and growth.
 Intercellular spaces are absent.Intercellular spaces are absent.
 Cells are rounded,oval or polygonal in shape.Cells are rounded,oval or polygonal in shape.
 Cells are always living and thin walled.Cells are always living and thin walled.
 Each cells has abundant cytoplasm and one orEach cells has abundant cytoplasm and one or
more nuclei.more nuclei.
 Nuclei are may quite small or absent.Nuclei are may quite small or absent.
 The cells are capable of regular,continuousThe cells are capable of regular,continuous
mitotic division.mitotic division.
Classification 0f Meristem;Classification 0f Meristem;
 The meristematic tissue is classified on the basis ofThe meristematic tissue is classified on the basis of
origin, location in the plant body and differentiation.origin, location in the plant body and differentiation.
 Based on originBased on origin
 Based on locationBased on location
 Based on differentiationBased on differentiation
Based on origin;Based on origin;
Based on origin, meristem can be classified intoBased on origin, meristem can be classified into
the following two types:the following two types:
Primary meristemPrimary meristem
Secondary meristemSecondary meristem
Primary Meristem;Primary Meristem;
 It is the meristem present at right fromIt is the meristem present at right from
embryonic stageembryonic stage
 Active throughout the life of plantActive throughout the life of plant
 Responsible for primary growth in the plantResponsible for primary growth in the plant
bodybody
 Responsible for primary growth in the plantResponsible for primary growth in the plant
bodybody
 It gives rise to primary permanent tissue of theIt gives rise to primary permanent tissue of the
plant bodyplant body
ExampleExample
 Meristem found at the tip of the stem and root.Meristem found at the tip of the stem and root.
Secondary Meristem;Secondary Meristem;
 It is the meristem that aears later in the lifeIt is the meristem that aears later in the life
cycle of a plantcycle of a plant
 . It is responsible for secondary growth in the. It is responsible for secondary growth in the
plant bodyplant body
 . It gives rise to secondary permanent tissues. It gives rise to secondary permanent tissues
such as secondary cortex and secondarysuch as secondary cortex and secondary
xylem.xylem.
 e.g Cork cambium and vascular cambium.e.g Cork cambium and vascular cambium.
. Based on Location (or Position). Based on Location (or Position)
in the Plant Bodyin the Plant Body
 Apical meristemApical meristem
 Intercalary meristemIntercalary meristem
 Lateral meristemLateral meristem
Apical Meristem;Apical Meristem;
 It is the meristem present at the tip of the rootIt is the meristem present at the tip of the root
and stem, commonly called as root apex andand stem, commonly called as root apex and
shoot apex respectively.shoot apex respectively.
 Such meristems constitute the activelySuch meristems constitute the actively
growing regions in the plant body.growing regions in the plant body.
 Due to the activity of apical meristem the plantDue to the activity of apical meristem the plant
body keeps increasing in its lengthbody keeps increasing in its length
Root and Apical MeristemRoot and Apical Meristem
Shoot Apical MeristemShoot Apical Meristem
Root Apical MeristemRoot Apical Meristem
1. Root cap
initials
2. Protoderm
3. Ground
meristem
4. Procambium
5. Root cap
Inercalary Meristem;Inercalary Meristem;
 It is the meristem that occurs betweenIt is the meristem that occurs between
permanent tissuespermanent tissues
 . It may also occur at the base of the leaves. It may also occur at the base of the leaves
 It is particularly common at the nodal regions.It is particularly common at the nodal regions.
 It is also responsible for the formation ofIt is also responsible for the formation of
branches at the nodal regions.branches at the nodal regions.
 The apical and intercalary meristems areThe apical and intercalary meristems are
examples of primary meristem.examples of primary meristem.
Intercalary MeristemIntercalary Meristem
Lateral meristemLateral meristem
 The lateral meristems are composed of suchThe lateral meristems are composed of such
initials which divides in mainly in oneinitials which divides in mainly in one
plane(periclinally) and increase in the diameterplane(periclinally) and increase in the diameter
of an organ.of an organ.
 This is responsible for growth in thickness ofThis is responsible for growth in thickness of
plant body.plant body.
Based on Differentiation;Based on Differentiation;
 There are three typesThere are three types
 Protoderm (It is the meristem that alwaysProtoderm (It is the meristem that always
differentiates into protective structures likedifferentiates into protective structures like
epidermis).epidermis).
 Ground meristem(It is the meristem thatGround meristem(It is the meristem that
always differentiates into ground tissuealways differentiates into ground tissue
components such as cortex, endodermis andcomponents such as cortex, endodermis and
pith).pith).
ProcambiumProcambium
 It is the meristem that always differentiatesIt is the meristem that always differentiates
into theinto the vascular tissuesvascular tissues like xylem andlike xylem and
phloem.phloem.
Lateral Meristems – secondaryLateral Meristems – secondary
growth in woody plantsgrowth in woody plants
This stem has two lateral meristems. They are the vascular
cambium and the cork cambium. (This is 1 year)
Lateral Meristems – secondaryLateral Meristems – secondary
growth in woody plantsgrowth in woody plants
Basswood – root in cross section
Basswood – stem in cross
section; 1, 2, 3 year old stems
THANK YOUTHANK YOU

Weitere ähnliche Inhalte

Was ist angesagt? (20)

Development of male gametophyte
Development of male gametophyteDevelopment of male gametophyte
Development of male gametophyte
 
Pteris ppt
Pteris pptPteris ppt
Pteris ppt
 
Meristems
MeristemsMeristems
Meristems
 
Cycas
CycasCycas
Cycas
 
General Characters of Gymnosperms.pptx
General Characters of Gymnosperms.pptxGeneral Characters of Gymnosperms.pptx
General Characters of Gymnosperms.pptx
 
Welcome to application of anatomy in systematics &
Welcome to application of anatomy in systematics &Welcome to application of anatomy in systematics &
Welcome to application of anatomy in systematics &
 
Shoot Apex
Shoot ApexShoot Apex
Shoot Apex
 
Types of embryosac
Types of embryosacTypes of embryosac
Types of embryosac
 
Bentham and hooker classification
Bentham and hooker classificationBentham and hooker classification
Bentham and hooker classification
 
Meristematic tissue
Meristematic tissueMeristematic tissue
Meristematic tissue
 
Secondary Growth in Dicot Stem & Root
Secondary Growth in Dicot Stem & RootSecondary Growth in Dicot Stem & Root
Secondary Growth in Dicot Stem & Root
 
Bryophytes
BryophytesBryophytes
Bryophytes
 
The Embryo sac Structure of Angiosperms
The Embryo sac Structure of AngiospermsThe Embryo sac Structure of Angiosperms
The Embryo sac Structure of Angiosperms
 
Bryophytes
BryophytesBryophytes
Bryophytes
 
Artificial classification system
Artificial classification systemArtificial classification system
Artificial classification system
 
5 2 -pinus
5   2 -pinus5   2 -pinus
5 2 -pinus
 
Structure, Development & Function of Periderm
Structure, Development & Function of PeridermStructure, Development & Function of Periderm
Structure, Development & Function of Periderm
 
APOGAMY & APOSPORY.pptx
APOGAMY & APOSPORY.pptxAPOGAMY & APOSPORY.pptx
APOGAMY & APOSPORY.pptx
 
Structure of Anther
Structure of  AntherStructure of  Anther
Structure of Anther
 
Vascular cambium gurpreet s
Vascular cambium gurpreet sVascular cambium gurpreet s
Vascular cambium gurpreet s
 

Ähnlich wie Meristem

Plant tissues and its types (part I)
Plant tissues and its types (part I)Plant tissues and its types (part I)
Plant tissues and its types (part I)Dilip Gavande
 
Meristematic tissue types and classification.
Meristematic tissue types and classification.Meristematic tissue types and classification.
Meristematic tissue types and classification.anuragpandey304
 
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdf
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdfMERISTEMS TISSUE AND ITS CLASSIFICATION.pdf
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdfKashifRaza88654
 
Tissues and types of plant tissues
Tissues and types of plant tissuesTissues and types of plant tissues
Tissues and types of plant tissuesRahul Kumar
 
meristematictissue-740 (1).pd
meristematictissue-740 (1).pdmeristematictissue-740 (1).pd
meristematictissue-740 (1).pdPraveen0073
 
2a-Meristematic Tissues.pptx
2a-Meristematic Tissues.pptx2a-Meristematic Tissues.pptx
2a-Meristematic Tissues.pptxMUNAWARSHAH26
 
Clasification of meristem .apical meristem
Clasification of meristem .apical meristemClasification of meristem .apical meristem
Clasification of meristem .apical meristemgohil sanjay bhagvanji
 
Plant tissues, 9 cbse
Plant tissues, 9 cbsePlant tissues, 9 cbse
Plant tissues, 9 cbseDivyam1027
 

Ähnlich wie Meristem (20)

Biologi - Jaringan Meristem
Biologi - Jaringan MeristemBiologi - Jaringan Meristem
Biologi - Jaringan Meristem
 
Plant Tissues by MAK
Plant Tissues by MAKPlant Tissues by MAK
Plant Tissues by MAK
 
Tissues-I
Tissues-ITissues-I
Tissues-I
 
Meristematic tissue
Meristematic tissueMeristematic tissue
Meristematic tissue
 
Plant tissues and its types (part I)
Plant tissues and its types (part I)Plant tissues and its types (part I)
Plant tissues and its types (part I)
 
Meristematic tissue types and classification.
Meristematic tissue types and classification.Meristematic tissue types and classification.
Meristematic tissue types and classification.
 
Planttissues by pooja
Planttissues   by poojaPlanttissues   by pooja
Planttissues by pooja
 
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdf
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdfMERISTEMS TISSUE AND ITS CLASSIFICATION.pdf
MERISTEMS TISSUE AND ITS CLASSIFICATION.pdf
 
Tissues and types of plant tissues
Tissues and types of plant tissuesTissues and types of plant tissues
Tissues and types of plant tissues
 
Meristematic tissue
Meristematic tissueMeristematic tissue
Meristematic tissue
 
meristematictissue-740 (1).pd
meristematictissue-740 (1).pdmeristematictissue-740 (1).pd
meristematictissue-740 (1).pd
 
2a-Meristematic Tissues.pptx
2a-Meristematic Tissues.pptx2a-Meristematic Tissues.pptx
2a-Meristematic Tissues.pptx
 
Plnt tissues
Plnt tissuesPlnt tissues
Plnt tissues
 
PLANT TISSUES.pptx
PLANT TISSUES.pptxPLANT TISSUES.pptx
PLANT TISSUES.pptx
 
types of meristems.
types of meristems.types of meristems.
types of meristems.
 
Tissues 090823124105-phpapp01
Tissues 090823124105-phpapp01Tissues 090823124105-phpapp01
Tissues 090823124105-phpapp01
 
Plant anatomy 1
Plant anatomy 1Plant anatomy 1
Plant anatomy 1
 
Clasification of meristem .apical meristem
Clasification of meristem .apical meristemClasification of meristem .apical meristem
Clasification of meristem .apical meristem
 
Biljna tkiva
Biljna tkivaBiljna tkiva
Biljna tkiva
 
Plant tissues, 9 cbse
Plant tissues, 9 cbsePlant tissues, 9 cbse
Plant tissues, 9 cbse
 

Mehr von Effa Kiran

photosystem Iand II,ETC
photosystem Iand II,ETCphotosystem Iand II,ETC
photosystem Iand II,ETCEffa Kiran
 
simple tissues
simple tissuessimple tissues
simple tissuesEffa Kiran
 
Deforestation & conservation efforts farrukh
Deforestation & conservation efforts farrukhDeforestation & conservation efforts farrukh
Deforestation & conservation efforts farrukhEffa Kiran
 
Abnormal secondary growth
Abnormal secondary growthAbnormal secondary growth
Abnormal secondary growthEffa Kiran
 

Mehr von Effa Kiran (9)

photosystem Iand II,ETC
photosystem Iand II,ETCphotosystem Iand II,ETC
photosystem Iand II,ETC
 
anatomy
anatomyanatomy
anatomy
 
simple tissues
simple tissuessimple tissues
simple tissues
 
Faima ppt
Faima pptFaima ppt
Faima ppt
 
Deforestation & conservation efforts farrukh
Deforestation & conservation efforts farrukhDeforestation & conservation efforts farrukh
Deforestation & conservation efforts farrukh
 
Chloro.ppt
Chloro.pptChloro.ppt
Chloro.ppt
 
Algae
AlgaeAlgae
Algae
 
Abnormal secondary growth
Abnormal secondary growthAbnormal secondary growth
Abnormal secondary growth
 
weddle's rule
weddle's ruleweddle's rule
weddle's rule
 

Kürzlich hochgeladen

WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11
WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11
WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11GelineAvendao
 
Unveiling the Cannabis Plant’s Potential
Unveiling the Cannabis Plant’s PotentialUnveiling the Cannabis Plant’s Potential
Unveiling the Cannabis Plant’s PotentialMarkus Roggen
 
FBI Profiling - Forensic Psychology.pptx
FBI Profiling - Forensic Psychology.pptxFBI Profiling - Forensic Psychology.pptx
FBI Profiling - Forensic Psychology.pptxPayal Shrivastava
 
Introduction of Human Body & Structure of cell.pptx
Introduction of Human Body & Structure of cell.pptxIntroduction of Human Body & Structure of cell.pptx
Introduction of Human Body & Structure of cell.pptxMedical College
 
The Sensory Organs, Anatomy and Function
The Sensory Organs, Anatomy and FunctionThe Sensory Organs, Anatomy and Function
The Sensory Organs, Anatomy and FunctionJadeNovelo1
 
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptx
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptxGENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptx
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptxRitchAndruAgustin
 
Pests of Sunflower_Binomics_Identification_Dr.UPR
Pests of Sunflower_Binomics_Identification_Dr.UPRPests of Sunflower_Binomics_Identification_Dr.UPR
Pests of Sunflower_Binomics_Identification_Dr.UPRPirithiRaju
 
DETECTION OF MUTATION BY CLB METHOD.pptx
DETECTION OF MUTATION BY CLB METHOD.pptxDETECTION OF MUTATION BY CLB METHOD.pptx
DETECTION OF MUTATION BY CLB METHOD.pptx201bo007
 
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika Das
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika DasBACTERIAL DEFENSE SYSTEM by Dr. Chayanika Das
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika DasChayanika Das
 
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2AuEnriquezLontok
 
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary Microbiology
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary MicrobiologyLAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary Microbiology
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary MicrobiologyChayanika Das
 
Gas-ExchangeS-in-Plants-and-Animals.pptx
Gas-ExchangeS-in-Plants-and-Animals.pptxGas-ExchangeS-in-Plants-and-Animals.pptx
Gas-ExchangeS-in-Plants-and-Animals.pptxGiovaniTrinidad
 
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...Chayanika Das
 
dll general biology week 1 - Copy.docx
dll general biology   week 1 - Copy.docxdll general biology   week 1 - Copy.docx
dll general biology week 1 - Copy.docxkarenmillo
 
cybrids.pptx production_advanges_limitation
cybrids.pptx production_advanges_limitationcybrids.pptx production_advanges_limitation
cybrids.pptx production_advanges_limitationSanghamitraMohapatra5
 
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdf
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdfKDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdf
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdfGABYFIORELAMALPARTID1
 
Loudspeaker- direct radiating type and horn type.pptx
Loudspeaker- direct radiating type and horn type.pptxLoudspeaker- direct radiating type and horn type.pptx
Loudspeaker- direct radiating type and horn type.pptxpriyankatabhane
 

Kürzlich hochgeladen (20)

WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11
WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11
WEEK 4 PHYSICAL SCIENCE QUARTER 3 FOR G11
 
Unveiling the Cannabis Plant’s Potential
Unveiling the Cannabis Plant’s PotentialUnveiling the Cannabis Plant’s Potential
Unveiling the Cannabis Plant’s Potential
 
FBI Profiling - Forensic Psychology.pptx
FBI Profiling - Forensic Psychology.pptxFBI Profiling - Forensic Psychology.pptx
FBI Profiling - Forensic Psychology.pptx
 
Introduction of Human Body & Structure of cell.pptx
Introduction of Human Body & Structure of cell.pptxIntroduction of Human Body & Structure of cell.pptx
Introduction of Human Body & Structure of cell.pptx
 
Interferons.pptx.
Interferons.pptx.Interferons.pptx.
Interferons.pptx.
 
The Sensory Organs, Anatomy and Function
The Sensory Organs, Anatomy and FunctionThe Sensory Organs, Anatomy and Function
The Sensory Organs, Anatomy and Function
 
Ultrastructure and functions of Chloroplast.pptx
Ultrastructure and functions of Chloroplast.pptxUltrastructure and functions of Chloroplast.pptx
Ultrastructure and functions of Chloroplast.pptx
 
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptx
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptxGENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptx
GENERAL PHYSICS 2 REFRACTION OF LIGHT SENIOR HIGH SCHOOL GENPHYS2.pptx
 
Pests of Sunflower_Binomics_Identification_Dr.UPR
Pests of Sunflower_Binomics_Identification_Dr.UPRPests of Sunflower_Binomics_Identification_Dr.UPR
Pests of Sunflower_Binomics_Identification_Dr.UPR
 
DETECTION OF MUTATION BY CLB METHOD.pptx
DETECTION OF MUTATION BY CLB METHOD.pptxDETECTION OF MUTATION BY CLB METHOD.pptx
DETECTION OF MUTATION BY CLB METHOD.pptx
 
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika Das
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika DasBACTERIAL DEFENSE SYSTEM by Dr. Chayanika Das
BACTERIAL DEFENSE SYSTEM by Dr. Chayanika Das
 
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2
LESSON PLAN IN SCIENCE GRADE 4 WEEK 1 DAY 2
 
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary Microbiology
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary MicrobiologyLAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary Microbiology
LAMP PCR.pptx by Dr. Chayanika Das, Ph.D, Veterinary Microbiology
 
Gas-ExchangeS-in-Plants-and-Animals.pptx
Gas-ExchangeS-in-Plants-and-Animals.pptxGas-ExchangeS-in-Plants-and-Animals.pptx
Gas-ExchangeS-in-Plants-and-Animals.pptx
 
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...
ESSENTIAL FEATURES REQUIRED FOR ESTABLISHING FOUR TYPES OF BIOSAFETY LABORATO...
 
dll general biology week 1 - Copy.docx
dll general biology   week 1 - Copy.docxdll general biology   week 1 - Copy.docx
dll general biology week 1 - Copy.docx
 
cybrids.pptx production_advanges_limitation
cybrids.pptx production_advanges_limitationcybrids.pptx production_advanges_limitation
cybrids.pptx production_advanges_limitation
 
AZOTOBACTER AS BIOFERILIZER.PPTX
AZOTOBACTER AS BIOFERILIZER.PPTXAZOTOBACTER AS BIOFERILIZER.PPTX
AZOTOBACTER AS BIOFERILIZER.PPTX
 
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdf
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdfKDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdf
KDIGO-2023-CKD-Guideline-Public-Review-Draft_5-July-2023.pdf
 
Loudspeaker- direct radiating type and horn type.pptx
Loudspeaker- direct radiating type and horn type.pptxLoudspeaker- direct radiating type and horn type.pptx
Loudspeaker- direct radiating type and horn type.pptx
 

Meristem

  • 1.
  • 2. Presentation of Plant AnatomyPresentation of Plant Anatomy Presented to;Presented to; Mam TaibaMam Taiba Presented by;Presented by; Farrukh JamilFarrukh Jamil Roll no;Roll no; _001_001
  • 3. Plant Tissues;Plant Tissues;  Groups or masses of the cells that are alike inGroups or masses of the cells that are alike in region, structure, and function form tissue.region, structure, and function form tissue. From the study point of view, the tissues mayFrom the study point of view, the tissues may be grouped into three principal groups;be grouped into three principal groups;  1-Meristems or meristematic tissues.1-Meristems or meristematic tissues.  2-Permanent tissues.2-Permanent tissues.  3-Secretory tissues.3-Secretory tissues.
  • 4. MeristemMeristem  Meristem is a ‘Geek word Meristosis”Meristem is a ‘Geek word Meristosis” meaning to divide.meaning to divide.  A meristemic tissue consists of a group ofA meristemic tissue consists of a group of cells which remain in a continuous state ofcells which remain in a continuous state of division or they retain their power of division.division or they retain their power of division.
  • 6. Charectrstics of meristem;Charectrstics of meristem;  Composed of immature cells which are state ofComposed of immature cells which are state of division and growth.division and growth.  Intercellular spaces are absent.Intercellular spaces are absent.  Cells are rounded,oval or polygonal in shape.Cells are rounded,oval or polygonal in shape.  Cells are always living and thin walled.Cells are always living and thin walled.  Each cells has abundant cytoplasm and one orEach cells has abundant cytoplasm and one or more nuclei.more nuclei.  Nuclei are may quite small or absent.Nuclei are may quite small or absent.  The cells are capable of regular,continuousThe cells are capable of regular,continuous mitotic division.mitotic division.
  • 7. Classification 0f Meristem;Classification 0f Meristem;  The meristematic tissue is classified on the basis ofThe meristematic tissue is classified on the basis of origin, location in the plant body and differentiation.origin, location in the plant body and differentiation.  Based on originBased on origin  Based on locationBased on location  Based on differentiationBased on differentiation
  • 8. Based on origin;Based on origin; Based on origin, meristem can be classified intoBased on origin, meristem can be classified into the following two types:the following two types: Primary meristemPrimary meristem Secondary meristemSecondary meristem
  • 9. Primary Meristem;Primary Meristem;  It is the meristem present at right fromIt is the meristem present at right from embryonic stageembryonic stage  Active throughout the life of plantActive throughout the life of plant  Responsible for primary growth in the plantResponsible for primary growth in the plant bodybody  Responsible for primary growth in the plantResponsible for primary growth in the plant bodybody  It gives rise to primary permanent tissue of theIt gives rise to primary permanent tissue of the plant bodyplant body
  • 10. ExampleExample  Meristem found at the tip of the stem and root.Meristem found at the tip of the stem and root.
  • 11. Secondary Meristem;Secondary Meristem;  It is the meristem that aears later in the lifeIt is the meristem that aears later in the life cycle of a plantcycle of a plant  . It is responsible for secondary growth in the. It is responsible for secondary growth in the plant bodyplant body  . It gives rise to secondary permanent tissues. It gives rise to secondary permanent tissues such as secondary cortex and secondarysuch as secondary cortex and secondary xylem.xylem.  e.g Cork cambium and vascular cambium.e.g Cork cambium and vascular cambium.
  • 12. . Based on Location (or Position). Based on Location (or Position) in the Plant Bodyin the Plant Body  Apical meristemApical meristem  Intercalary meristemIntercalary meristem  Lateral meristemLateral meristem
  • 13. Apical Meristem;Apical Meristem;  It is the meristem present at the tip of the rootIt is the meristem present at the tip of the root and stem, commonly called as root apex andand stem, commonly called as root apex and shoot apex respectively.shoot apex respectively.  Such meristems constitute the activelySuch meristems constitute the actively growing regions in the plant body.growing regions in the plant body.  Due to the activity of apical meristem the plantDue to the activity of apical meristem the plant body keeps increasing in its lengthbody keeps increasing in its length
  • 14. Root and Apical MeristemRoot and Apical Meristem
  • 15. Shoot Apical MeristemShoot Apical Meristem
  • 16. Root Apical MeristemRoot Apical Meristem 1. Root cap initials 2. Protoderm 3. Ground meristem 4. Procambium 5. Root cap
  • 17. Inercalary Meristem;Inercalary Meristem;  It is the meristem that occurs betweenIt is the meristem that occurs between permanent tissuespermanent tissues  . It may also occur at the base of the leaves. It may also occur at the base of the leaves  It is particularly common at the nodal regions.It is particularly common at the nodal regions.  It is also responsible for the formation ofIt is also responsible for the formation of branches at the nodal regions.branches at the nodal regions.  The apical and intercalary meristems areThe apical and intercalary meristems are examples of primary meristem.examples of primary meristem.
  • 19. Lateral meristemLateral meristem  The lateral meristems are composed of suchThe lateral meristems are composed of such initials which divides in mainly in oneinitials which divides in mainly in one plane(periclinally) and increase in the diameterplane(periclinally) and increase in the diameter of an organ.of an organ.  This is responsible for growth in thickness ofThis is responsible for growth in thickness of plant body.plant body.
  • 20. Based on Differentiation;Based on Differentiation;  There are three typesThere are three types  Protoderm (It is the meristem that alwaysProtoderm (It is the meristem that always differentiates into protective structures likedifferentiates into protective structures like epidermis).epidermis).  Ground meristem(It is the meristem thatGround meristem(It is the meristem that always differentiates into ground tissuealways differentiates into ground tissue components such as cortex, endodermis andcomponents such as cortex, endodermis and pith).pith).
  • 21. ProcambiumProcambium  It is the meristem that always differentiatesIt is the meristem that always differentiates into theinto the vascular tissuesvascular tissues like xylem andlike xylem and phloem.phloem.
  • 22. Lateral Meristems – secondaryLateral Meristems – secondary growth in woody plantsgrowth in woody plants This stem has two lateral meristems. They are the vascular cambium and the cork cambium. (This is 1 year)
  • 23. Lateral Meristems – secondaryLateral Meristems – secondary growth in woody plantsgrowth in woody plants Basswood – root in cross section Basswood – stem in cross section; 1, 2, 3 year old stems