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ANCILLARY BOTANY
PRACTICAL-I
SBYJA2P
PLANT DIVERSITY
PLANT ECOLOGY And
APPLIED BOTANY
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PLANT DIVERSITY
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Ex.No:01 ALGAE 02
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OSCILLATORIA
OSCILLATORIA – A FILAMENT
IDENTIFICATION:
The Given Slide is Identified as Oscillatoria – a Filament
REASONS FOR IDENTIFICATION:
• It is a Fresh water Free Floating Blue Green Algae.
• Plant Body is Unbranched Filamentous called TRICHOME
• Cells are Prokaryotic and are Broader than their Height.
• Presence of some Biconcave Dead cells called Necridia.
• Presence of Hormogone or Hormogonium between the Necridia
of Filament.
• Presence of Outer Chromoplasm with Many Thylakoids.
• Presence of Inner Centroplasm with Nuclear Material - DNA.
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OSCILLATORIA 03
A FILAMENT
A CELL
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Ex.No:02 0 4
00-00-00 OEDOGONIUM
OEDOGONIUM – A FILAMENT
IDENTIFICATION:
The Given Slide is Identified as Oedogonium- a Filament
REASONS FOR IDENTIFICATION:
• It is a Fresh Water Attached Form of Green Algae.
• Plant Body is Unbranched Filamentous.
• Cells are Eukaryotic and Cylindrical.
• Presence of a Reticulate Chloroplast with many Pyrenoids.
• Presence of Hapteron or Hold Fast for attachment.
• Presence of Cell Cap in some of the Cells of Filament.
• Presence of Antheridia and Oogonia in mature Filament.
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. OEDOGONIUM 05
A FILAMENT
A CELL
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OEDOGONIUM 06
OEDOGONIUM – NANNANDRIUM
IDENTIFICATION:
The Given Slide is Identified as Oedogonium-
Nannandrium.
REASONS FOR IDENTIFICATION:
• The Dwarf Male Filament of Oedogonium is called
Nannandrium.
• Presence of many Male Filaments on the Supporting Cell
or Oogonium.
• Presence of a Single Basal Stalk Cell with 2-3 Antheridia
in mature Nannandrium.
• Each Antheridium Produces Two Male Gametes called
Antherozoids.
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NANNANDRIUM
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. Ex.No-03 08
00-00-00 SARGASSUM
SARGASSUM – HABIT
IDENTIFICATION:
The Given Specimen is Identified as Sargassum-Habit.
REASONS FOR IDENTIFICATION:
• It is an Attached Form of Marine Brown Algae.
• Presence of Broad and Discoid Hold Fast for Attachment.
• Presence of Stem like Stipe consists of Main Axis and Lateral
Branches
• Presence of Secondary Lateral branches called Leaves.
• Presence of Stalked Air Bladders for Buoyancy.
• Presence of Highly branched Reproductive branches called
Receptacles.
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SARGASSUM 09
HABIT
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SARGASSUM 10
SARGASSUM MALE CONCEPTACLE
IDENTIFICATION:
The Given Slide is Identified as Sargassum-V.S of Male Conceptacle.
REASONS FOR IDENTIFICATION:
• The Male Conceptacles are embedded in the Receptacle.
• Each Conceptacle is Flask shaped cavity with Ostiole.
• Presence of many Branched and Unbranched filamentous structure called
Paraphyses.
• Presence of many Male Sex Organs called Antheridia at the tips of Branched
Paraphyses.
• Each Antheridium Produces 64 Male Gametes called Antherozoids.
SARGASSUM FEMALE CONCEPTACLE
IDENTIFICATION:
The Given Slide is Identified as Sargassum – V.S of Female
Conceptacle.
REASONS FOR IDENTIFICATION:
• The Female Conceptacles are embedded in the Receptacle.
• Each Conceptacle is Flask Shaped Cavity with Ostiole.
• Presence of many Unbranched Filamentous structure called Paraphyses.
• Presence of many Female Sex Organs called Oogonia in between Paraphyses.
• Each Oogonium Produces only one Functional Female Gamete called Egg or
Ovum.
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SARGASSUM 11
MALE CONCEPTACLE
FEMALE CONCEPTACLE
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Ex.No:04 FUNGI 12
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ASPERGILLUS
ASPERGILLUS HYPHAE WITH CONIDIOPHORE
IDENTIFICATION:
The Given Slide is Identified as Aspergillus Hyphae with
Conidiophore.
REASONS FOR IDENTIFICATION:
• It is Mould type of Fungi, commonly called Green Mould
• The Plant Body is Mycelium and it’s made up of Hyphae
• Vegetative Hyphae are Branched, Septate and Horizontal.
• Reproductive Hyphae or Conidiophore are Unbranched,
Aseptate and Vertical.
• Presences of many Bottle Shaped cells on the Vesicle are called
Sterigmata.
• Presence of many Conidiospores or conidia in chain at the tip of
Conidiophore.
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ASPERGILLUS 13
ASPERGILLUS HYPHAE WITH CONIDIOPHORE
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Ex.No:05 14
00-00-00 PUCCINIA
PUCCINIA UREDOSORUS
IDENTIFICATION:
The Given Slide is Identified as Puccinia - V.S of
Uredosorus.
REASONS FOR IDENTIFICATION:
• The Uredostage is reported in Primary Host Wheat.
• Uredostage Hyphae are Endoparasitc, Intercellular, Branched,
Septate and Dikaryotic.
• Presence of many Reddish Brown Streaks on the upper surface
of Wheat leaf called Uredosori.
• Presence of many Uredospores in each Uredosorus.
• Uredospores are Unicellular, Dikaryotic and Oval Shaped.
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PUCCINIA 15
V.S OF UREDOSORUS
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PUCCINIA 16
PUCCINIA TELEUTOSORUS
IDENTIFICATION:
The Given Slide is Identified as Puccinia - V.S of
Teleutosorus.
REASONS FOR IDENTIFICATION:
• The Teleutostage is reported in Primary host Wheat.
• Teleutostage Hyphae are Endoparasitc, Intercellular, Branched,
Septate and Dikaryotic.
• Presence of many Black Streaks on the surface of Leaf Sheaths
and Stem of Wheat called Teleutosori.
• Presence of many Teleutospores in each Teleutosorus.
• Teleutospore are Bicelled, Dikaryotic and Spindle shaped.
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PUCCINIA 17
V.S OF TELEUTOSORUS
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Ex.No:06 BRYOPHYTES 18
00-00-00 FUNARIA
FUNARIA GAMETOPHYTE WITH SPOROPHYTE
IDENTIFICATION:
The Given Specimen is Identified as Funaria – Gametophyte
with Sporophyte.
REASONS FOR IDENTIFICATION:
• Funaria is a Moss type of Bryophytes and also called Cord Moss
• The plant body is Haploid Gametophyte and it consists of
• Stem
• Leaves and
• Rhizoids
• Presence of Green, Erect and Branched Stem
• Presence of Green, Sessile and Oval shaped Leaves with
Distinct Midrib.
• Presence of Branched and Multicellular Root like Structures
called Rhizoids.
• Presence of Antheridial and Archegonial Branches in same Plant
• Presence of Sporophyte with Foot, Seta and Capsule in
Archegonial Branch
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FUNARIA 19
GAMETOPHYTE WITH SPOROPHYTE
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V.S OF ANTHERIDIAL HEAD OF FUNARIA 20
IDENTIFICATION:
The Given Slide is Identified as Funaria- V.S of Antheridial
Head.
REASONS FOR IDENTIFICATION:
• The Tip of Antheridial Branch of Funaria is called Antheridial
Head.
• Presence of many Antheridia along with Paraphyses and also
surrounded by Perichaetial leaves.
• Presence of Club shaped Antheridium
• Presence of Androcyte Mother Cells in Antheridium which
protected by a Jacket layer
• Each Fertile Androcyte Mother Cell produces Two Male
Gametes called Antherozoids.
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FUNARIA 21
V.S OF ANTHERIDIAL HEAD
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FUNARIA V.S OF ARCHEGONIAL HEAD 22
IDENTIFICATION:
The Given Slide is Identified as Funaria- V.S of
Archegonial Head.
REASONS FOR IDENTIFICATION:
• The Tip of Archegonial Branch of Funaria is called Archegonial
Head.
• Presence of many Archegonia along with Paraphyses and also
surrounded by Perichaetial leaves.
• Presence of Flask shaped Archegonium with short Stalk
• Presence of a Ventral Canal Cell and a female gamete called Egg in
Swollen Venter of Archegonium.
• Presence of 8-12 Neck Canal Cells in Narrow Neck of Archegonium.
• Presence of 4 Lid or Cover Cells in the mouth of the Neck.
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FUNARIA 23
V.S OF ARCHEGONIAL HEAD
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FUNARIA L.S OF CAPSULE 24
IDENTIFICATION:
The Given Slide is Identified as Funaria – L.S of Capsule.
REASONS FOR IDENTIFICATION:
• It is a Pear-Shaped part of Sporophyte of Funaria.
• Presence of Lower Sterile Part is called Apophysis.
• Presence of Middle Fertile Part is called Theca .
• Presence of Cap like Terminal part is called Lid.
• Presence of Spore Sac in Theca.
• The Spore Sac contains many Spore Mother Cells.
• Each Spore Mother Cell undergoes Meiosis to from Four
Haploid Spores
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FUNARIA 25
L.S OF CAPSULE
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Ex.No:07 PTERIDOPHYES 26
00-00-00 SELAGINELLA
SELAGINELLA -HABIT
IDENTIFICATION:
The Given Specimen is Identified as Selaginella Habit.
REASONS FOR IDENTIFICATION:
• Selaginella is Perennial Herb and commonly called Spike Moss.
• Presence of Prostrate and Dichotomously Branched Stem
• Presence of Heterophyllous Leaves
• Presence of tongue shaped structure called Ligule at the base of
leaf.
• Presence of Adventitious Root System for Fixation and
Absorption.
• Presence of Rhizophores from the forking place of stem.
• Presence of Reproductive Structures at the tip of branches
called Cones or Strobilus
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SELAGINELLA 27
SELAGINELLA -HABIT
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SELAGINELLA 28
SELAGINELLA T.S OF STEM
IDENTIFICATION:
The Given Specimen for Section is Selaginella Stem.
REASONS FOR IDENTIFICATION:
• Presence of Multicellular Unilayer Epidermis.
• Presence of Cuticle and Absence of Stomata.
• Presence of Outer Hypodermis made up of Sclerenchyma Cells
in Cortex
• Presence of Middle Parenchyma Cells in Cortex
• Presence of Inner Modified Endodermis with many Air
Chambers by Trabeculae.
• Presence of Protostele that is xylem is surrounded by phloem.
• Presence of Exarch and Diarch Xylem .
• Presence of Tracheids in xylem.
• Presence of Sieve Cells in Phloem.
• Absence of Pith.
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SELAGINELLA 29
SELAGINELLA T.S OF STEM
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SELAGINELLA 30
SELAGINELLA L.S OF CONE
IDENTIFICATION:
The Given Slide is Identified as Selaginella- L.S of Cone.
REASONS FOR IDENTIFICATION:
• Cones are Asexual Reproductive Structures of Selaginella
present at the tip of branches.
• Presence of Numerous Spirally Arranged Sporophylls in Cone
axis of Cone
• Presence of Microsporangium in its axils of Microsporophyll.
• Presence of Megasporangium in its axils of Megasporophyll.
• Presence of Ligule at the base of Both Sporangium.
• In Microsporangium, the Microspore Mother Cells Undergoes
Meiosis and Produce Numerous Haploid Microspores.
• In Megasporangium, the Single Functional Megaspore Mother
Cell Undergoes Meiosis to Produce Only 4 Haploid
Megaspores.
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SELAGINELLA 31
SELAGINELLA L.S OF CONE
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Ex.No:08 GYMNOSPERM 32
00-00-00 PINUS
PINUS -LONG SHOOT WITH DWARF SHOOT
IDENTIFICATION:
The Given Specimen is Identified as PINUS -LONG
SHOOT WITH DWARF SHOOT
REASONS FOR IDENTIFICATION:
• Pine Tree is a Conical, Tall, and Evergreen .
• The Branches are Two types namely
Long Shoots and
Dwarf shoots
• The Long Shoots develops from the Main Stem and also called
Branches of Unlimited Growth.
• The Long Shoot is covered by Scale Leaves.
• The Dwarf Shoots develops from the Long Shoot and also
called Branches of Limited Growth
• The Dwarf Shoot is covered by Scale Leaves and End with
Foliage Leaves or Pine Needles.
• The Dwarf Shoot with many Pine Needles is called Spur Shoot
or Foliar Spur
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PINUS 33
PINUS -LONG SHOOT WITH DWARF SHOOT
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PINUS 34
PINUS T.S OF NEEDLE
IDENTIFICATION:
The Given Specimen for Section is Pinus Needle.
REASONS FOR IDENTIFICATION:
• Presence of outer Multicellular Unilayer Epidermis.
• Presence of Thick Cuticle
• Presence of Sunken Stomata.
• Presence of Outer Hypodermis made up of 2-3 layers of
Sclerenchyma cells in Mesophyll.
• Presence of Arm Parenchyma cells in the Middle of Mesophyll.
• Presence of Two Resin Canals in Mesophyll.
• Presence of Multilayered Pericycle.
• Presence of Two Open and Collateral Vascular Bundles.
• Presence of Phloem towards Upper side, Xylem towards Lower
side and Cambium present between Xylem and Phloem of each
Vascular Bundle.
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PINUS 35
T.S OF
PINUS NEEDLE
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PINUS 36
PINUS MALE CONES or L.S OF MALE CONE
IDENTIFICATION:
The Given Specimen is Identified as Pinus-Male Cone
REASONS FOR IDENTIFICATION:
• Male Cones are Male Reproductive Organs of Pinus.
• Formed in Clusters at the Tip of Long Shoot.
• Made up of numerous Microsporophyll that arranged spirally
in Cone Axis of Cone.
• Presence of Two Megasporangia in Each Microsporophyll on
its lower side.
• Presence of numerous Microspore Mother Cells in each
Microsporangium.
• The Microspore Mother Cells undergo meiosis and produce
numerous Haploid Winged Microspores.
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PINUS 37
PINUS MALE CONE.
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PINUS 38
PINUS FEMALE CONES or L.S OF FEMALE CONE
IDENTIFICATION:
The Given Specimen is Identified as Pinus-Female Cone
REASONS FOR IDENTIFICATION:
• Female Cones are Female Reproductive Organs of Pinus.
• Present at the base of Long Shoot in Few Numbers.
• Presence of numerous Megasporophylls, arranged spirally in
Cone Axis of Cone.
• Each Megasporophyll made up of Bract Scale and Ovuliferous
Scale.
• Presence of Two Megasporangia or Ovules at the base on its
upper surface of Ovuliferous Scale
• Presence of only one Functional Megaspore in Each
Megasporangium.
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PINUS 39
PINUS FEMALE CONES
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PINUS 40
PINUS L.S OF OVULE
IDENTIFICATION:
The Given Specimen is Identified as Pinus-Female Cone
REASONS FOR IDENTIFICATION:
• The Megasporangium or Ovule consists of
Outer Integument and
Inner Nucellus
• The Inner Nucellus is a Nutritive Tissue.
• The Integument Leaves an Opening is called Micropyle
• The Female Gametophyte Develops inside the Nucellus with
3 to 5 Female Sex Organs called Archegonia towards the
Micropylar end.
• Each Archegonium is Flask Shape and it consists of Venter and
Neck
• Venter is a Basal Swollen Part and it has a Ventral Canal Cell
and an Egg
• Egg is Haploid and Non-Motile Female Gamete.
• Neck is a Short Upper Part Has No Neck Canal Cell.
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PINUS 41
PINUS L.S OVULE
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PLANT ECOLOGY
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EX.NO:09 HYDROPHYTES 44
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FREE FLOATING HYDROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Eichhornia
ECOLOGICAL ADAPTATION:
• It is Free Floating Hydrophytes.
• It contacts Water and Atmosphere.
• Presence of Well Developed Adventitious Roots for Balancing
the Plants in Water.
• Presence of Swollen Petioles For Floating the Plants in Water.
• Presence of Root Pockets For Balancing the Plants in Water.
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EICHHORNIA 45
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SUBMERGED FREE FLOATING HYDROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Ceratophyllum.
ECOLOGICAL ADAPTATION:
• It is Submerged Floating Hydrophytes.
• It contacts only water.
• Presence of Dissected Leaves that used to Avoid Damages from
Water Current.
• Absence of Roots due to the entire body contact only with water
and involved in Absorption.
• Presence of Slender Stem that used to Avoid Damages from
Water Current by easily bending.
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CERATOPHYLLUM 47
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ROOTED FLOATING HYDROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Lotus
ECOLOGICAL ADAPTATION:
• It is Rooted Floating Hydrophytes.
• It contacts with soil, water and air.
• Presence of Underground Stem.
• Presence of Long Petiole that used to bring out the Leaves on
the surface of Water.
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LOTUS 49
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ROOTED SUBMERGED HYDROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Vallisneria.
ECOLOGICAL ADAPTATION:
• It is Rooted Submerged Hydrophytes.
• It contacts soil and water.
• Presence of Ribbon Shaped Leaves that used to Avoid Damages
from Water Current.
• Presence of Poorly Developed Roots for Fixation.
• Presence of Slender Stolen Stem that used to Avoid Damages
from Water Current.
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VALLISNERIA 51
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ROOTED EMERGENT HYDROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Sagittaria.
ECOLOGICAL ADAPTATION:
• It is Rooted Emergent Hydrophytes.
• It contacts soil, water and air.
• Presence of Heterophyllous Leaves.
• Presence of Arrow Shaped normal Leaves above the Water
Level.
• Presence of Strap Shaped Modified Leaves below the Water
Level that used to Avoid Damages from Water Current.
• Presence of Well Developed Roots for Fixation and Absorption.
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SAGITTARIA 53
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EX.NO:10 T.S OF EICHHORNIA PETIOLE (T.S) 54
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IDENTIFICATION:
The Given Specimen for Section is Eichhornia Petiole.
REASONS FOR IDENTIFICATION:
• Presence of Well Developed Epidermis made of Thin Walled
Cells
• Presence of Thin Cuticle.
• Presence of Well Developed Multilayered Hypodermis made of
Parenchyma Cells
• Presence of Loosely Packed Parenchyma Cells in Cortex with
Many Air Chambers.
• Presence of Poorly Developed Vascular Bundles Scattered in
Cortex.
• Presence of Not Well Differentiated Xylem and Phloem in each
Vascular Bundle.
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T.S of EICHHORNIA PETIOLE 55
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EX.NO:11 T.S OF HYDRILLA STEM 56
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HYDRILLA STEM (T.S)
IDENTIFICATION:
The Given Specimen for Section is Hydrilla Stem.
REASONS FOR IDENTIFICATION:
• Presence of Loosely Packed Epidermis made of Thin Walled
Cells
• Absence of Cuticle.
• Absence of Stomata.
• Presence of Few layered Hypodermis made of Parenchyma
Cells
• Presence of Loosely Packed Parenchyma Cells in Cortex with
Many Air Chambers.
• Presence of Poorly Developed Vascular Tissue.
• Presence of Not Well Differentiated Xylem and Phloem in
Vascular Tissue.
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T.S of HYDRILLA STEM 57
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EX. NO:12 XEROPHYTES 58
00-00-00
DROUGHT ESCAPING XEROPHYTES
IDENTIFICATION:
The Given Specimen is Identified as Solanum xanthocarpum
ECOLOGICAL ADAPTATION:
• It is a Drought Escaping Xerophytes
• It is an Annual Plant, Complete their Life Cycle in Favorable
Season.
• During Rainy Season, it germinate from Seeds, Grow,
Reproduce and Die
• It Escapes from Dry season in the form of Seed with thick Seed
Coat.
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Solanum xanthocarpum
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DROUGHT ENDURING XEROPHYTES
STEM SUCCULENT
IDENTIFICATION:
The Given Specimen is Identified as Opuntia
ECOLOGICAL ADAPTATION:
• It is a Stem Succulent Drought Enduring Xerophytes.
• It is a Perennial Plant.
• It Undergo the Dry Seasons by Storage of water during rainy
season.
• It has Water Storing Parenchymatous Tissue in Stem.
• The Stem is Succulent due to the storage of water in the Stem.
• The leaves are modified into Spines for reduce transpiration
• The Succulent Stem becomes Flat, Green and Carry the
Function of leaves called Phylloclade.
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Opuntia
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DROUGHT ENDURING XEROPHYTES
LEAF SUCCULENT
IDENTIFICATION:
The Given Specimen is Identified as Aloe
ECOLOGICAL ADAPTATION:
• It is a Leaf Succulent Drought Enduring Xerophytes.
• It is a Perennial Plant.
• It Undergo the Dry Seasons by Storage of water during rainy
season.
• It has Water Storing Parenchymatous Tissue in Leaves.
• The Leaves are Succulent due to the storage of water.
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ALOE
.
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DROUGHT ENDURING XEROPHYTES 64
ROOT SUCCULENT
IDENTIFICATION:
The Given Specimen is Identified as Asparagus
ECOLOGICAL ADAPTATION:
• It is a Root Succulent Drought Enduring Xerophytes.
• It is a Perennial Plant.
• It Undergo the Dry Season by Storage of water during rainy
season.
• It has Water Storing Parenchymatous Tissue in Roots.
• The Roots are Succulent due to the storage of water.
.
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Asparagus
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DROUGHT RESISTANT XEROPHYTES 66
IDENTIFICATION:
The Given Specimen is Identified as Casuarina
ECOLOGICAL ADAPTATION:
• It is a Drought Resistant Xerophytes or True Xerophytes
• It is a Perennial Plant.
• It Resist Extreme Drought, by Developing Special adaptation in
their Morphology, Anatomy and Physiology.
• Leaves are modified in to Scales to Reduce Transpiration.
• The main stem is Woody.
• The Branches are Green and involved in Photosynthesis.
• Stomata are Sunken in Branches.
.
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Casuarina
.
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EX.NO:13 T.S OF NERIUM LEAF
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T.S OF NERIUM LEAF
IDENTIFICATION:
The Given Specimen for Section is Nerium Leaf.
REASONS FOR IDENTIFICATION:
• Presence of Multilayered Epidermis made of Thick Walled
Cells
• Presence thick Cuticle.
• Presence of Sunken Stomata in Lower Epidermis
• Presence of Trichomes in Stomata.
• Presence of Well Developed Mesophyll and Differentiated in to
Upper Palisade Parenchyma and Lower Spongy Parenchyma.
• Presence of Well Developed Vascular Tissue and
Differentiated in to Xylem and Phloem
.
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T.S OF NERIUM LEAF
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EX.NO:14 T.S OF CASURAINA STEM
00-00-00 70
T.S OF CASURAINA STEM
IDENTIFICATION:
The Given Specimen for Section is Casuarina Stem.
REASONS FOR IDENTIFICATION:
• Presence of Well Developed Epidermis made of Thick Walled
Cells
• Presence thick Cuticle.
• Presence of Sunken Stomata.
• Presence of Epidermal Hairs in Stomata.
• Presence of Multilayered Hypodermis made of Sclerenchyma
Cells
• Presence of Closely Packed Parenchyma Cells in Cortex.
• Presence of Many Well Developed Vascular Bundles arranged
in Regular Rings.
• Presence of Well Differentiated Xylem, Cambium and Phloem
in each Vascular Bundle.
• Presence of Pith.
.
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T.S OF CASURAINA STEM
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EX.NO:15
00-00-00 HALOPHYTES 72
PNEUMATOPHORE
IDENTIFICATION:
The Given Specimen is Identified as Pneumatophore
of Rhizophora
ECOLOGICAL ADAPTATION:
• Pneumatophore is an additional Aerial Root for Respiration.
• The Pneumatophores are Aerial Negatively Geotropic roots that
develops from the horizontal lateral roots and Comes out of the
surface of water or mud
• Presence of Lenticels or Pneumatothodes in Pneumatophore for
Gas exchange during Respiration
• Presence of Arenchyma tissue in Pneumatophores for Storage
and diffusion of Air to the Lower part of root.
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Rhizophora -Pneumatophore
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VIVIPAROUS GERMINATION
IDENTIFICATION:
The Given Specimen is Identified as Viviparous Germination
in Avicennia
ECOLOGICAL ADAPTATION:
• The Seeds Starts to Germinate when they Attached to the Plant
is called Viviparous germination
• In Mangrove Halophytes, the Saline Water is Unsuitable for
Seed Germination and Early Growth of Seedlings
• The Embryo of the Seed Grows and Develops in to Seedlings
with in the Fruit when the Fruit is Attached to the Plant
• The Seedling consists of a Club shaped Hypocotyle and a
Downwardly Pointed Radicle
• After the Hypocotyle attain the length of 50-75 cm, the
Seedlings fall vertically down and fixed in the soil or mud and
grow
• The upper part of the Hypocotyle produces new shoot and the
Radicle Produces New Roots of the Seedlings with in Few
Hours
BOTRVMSBKCAPK
. 75
Viviparous Germination in Avicennia
.
BOTRVMSBKCAPK

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SBYJA2P.pdf

  • 1. . ANCILLARY BOTANY PRACTICAL-I SBYJA2P PLANT DIVERSITY PLANT ECOLOGY And APPLIED BOTANY BOTRVMSBKCAPK
  • 3. . Ex.No:01 ALGAE 02 00-00-00 OSCILLATORIA OSCILLATORIA – A FILAMENT IDENTIFICATION: The Given Slide is Identified as Oscillatoria – a Filament REASONS FOR IDENTIFICATION: • It is a Fresh water Free Floating Blue Green Algae. • Plant Body is Unbranched Filamentous called TRICHOME • Cells are Prokaryotic and are Broader than their Height. • Presence of some Biconcave Dead cells called Necridia. • Presence of Hormogone or Hormogonium between the Necridia of Filament. • Presence of Outer Chromoplasm with Many Thylakoids. • Presence of Inner Centroplasm with Nuclear Material - DNA. BOTRVMSBKCAPK
  • 4. . OSCILLATORIA 03 A FILAMENT A CELL BOTRVMSBKCAPK
  • 5. . Ex.No:02 0 4 00-00-00 OEDOGONIUM OEDOGONIUM – A FILAMENT IDENTIFICATION: The Given Slide is Identified as Oedogonium- a Filament REASONS FOR IDENTIFICATION: • It is a Fresh Water Attached Form of Green Algae. • Plant Body is Unbranched Filamentous. • Cells are Eukaryotic and Cylindrical. • Presence of a Reticulate Chloroplast with many Pyrenoids. • Presence of Hapteron or Hold Fast for attachment. • Presence of Cell Cap in some of the Cells of Filament. • Presence of Antheridia and Oogonia in mature Filament. BOTRVMSBKCAPK
  • 6. . . OEDOGONIUM 05 A FILAMENT A CELL BOTRVMSBKCAPK
  • 7. . OEDOGONIUM 06 OEDOGONIUM – NANNANDRIUM IDENTIFICATION: The Given Slide is Identified as Oedogonium- Nannandrium. REASONS FOR IDENTIFICATION: • The Dwarf Male Filament of Oedogonium is called Nannandrium. • Presence of many Male Filaments on the Supporting Cell or Oogonium. • Presence of a Single Basal Stalk Cell with 2-3 Antheridia in mature Nannandrium. • Each Antheridium Produces Two Male Gametes called Antherozoids. BOTRVMSBKCAPK
  • 9. . . Ex.No-03 08 00-00-00 SARGASSUM SARGASSUM – HABIT IDENTIFICATION: The Given Specimen is Identified as Sargassum-Habit. REASONS FOR IDENTIFICATION: • It is an Attached Form of Marine Brown Algae. • Presence of Broad and Discoid Hold Fast for Attachment. • Presence of Stem like Stipe consists of Main Axis and Lateral Branches • Presence of Secondary Lateral branches called Leaves. • Presence of Stalked Air Bladders for Buoyancy. • Presence of Highly branched Reproductive branches called Receptacles. BOTRVMSBKCAPK
  • 11. . SARGASSUM 10 SARGASSUM MALE CONCEPTACLE IDENTIFICATION: The Given Slide is Identified as Sargassum-V.S of Male Conceptacle. REASONS FOR IDENTIFICATION: • The Male Conceptacles are embedded in the Receptacle. • Each Conceptacle is Flask shaped cavity with Ostiole. • Presence of many Branched and Unbranched filamentous structure called Paraphyses. • Presence of many Male Sex Organs called Antheridia at the tips of Branched Paraphyses. • Each Antheridium Produces 64 Male Gametes called Antherozoids. SARGASSUM FEMALE CONCEPTACLE IDENTIFICATION: The Given Slide is Identified as Sargassum – V.S of Female Conceptacle. REASONS FOR IDENTIFICATION: • The Female Conceptacles are embedded in the Receptacle. • Each Conceptacle is Flask Shaped Cavity with Ostiole. • Presence of many Unbranched Filamentous structure called Paraphyses. • Presence of many Female Sex Organs called Oogonia in between Paraphyses. • Each Oogonium Produces only one Functional Female Gamete called Egg or Ovum. BOTRVMSBKCAPK
  • 12. . SARGASSUM 11 MALE CONCEPTACLE FEMALE CONCEPTACLE BOTRVMSBKCAPK
  • 13. . Ex.No:04 FUNGI 12 00-00-00 ASPERGILLUS ASPERGILLUS HYPHAE WITH CONIDIOPHORE IDENTIFICATION: The Given Slide is Identified as Aspergillus Hyphae with Conidiophore. REASONS FOR IDENTIFICATION: • It is Mould type of Fungi, commonly called Green Mould • The Plant Body is Mycelium and it’s made up of Hyphae • Vegetative Hyphae are Branched, Septate and Horizontal. • Reproductive Hyphae or Conidiophore are Unbranched, Aseptate and Vertical. • Presences of many Bottle Shaped cells on the Vesicle are called Sterigmata. • Presence of many Conidiospores or conidia in chain at the tip of Conidiophore. BOTRVMSBKCAPK
  • 14. . ASPERGILLUS 13 ASPERGILLUS HYPHAE WITH CONIDIOPHORE BOTRVMSBKCAPK
  • 15. . Ex.No:05 14 00-00-00 PUCCINIA PUCCINIA UREDOSORUS IDENTIFICATION: The Given Slide is Identified as Puccinia - V.S of Uredosorus. REASONS FOR IDENTIFICATION: • The Uredostage is reported in Primary Host Wheat. • Uredostage Hyphae are Endoparasitc, Intercellular, Branched, Septate and Dikaryotic. • Presence of many Reddish Brown Streaks on the upper surface of Wheat leaf called Uredosori. • Presence of many Uredospores in each Uredosorus. • Uredospores are Unicellular, Dikaryotic and Oval Shaped. BOTRVMSBKCAPK
  • 16. . PUCCINIA 15 V.S OF UREDOSORUS BOTRVMSBKCAPK
  • 17. . PUCCINIA 16 PUCCINIA TELEUTOSORUS IDENTIFICATION: The Given Slide is Identified as Puccinia - V.S of Teleutosorus. REASONS FOR IDENTIFICATION: • The Teleutostage is reported in Primary host Wheat. • Teleutostage Hyphae are Endoparasitc, Intercellular, Branched, Septate and Dikaryotic. • Presence of many Black Streaks on the surface of Leaf Sheaths and Stem of Wheat called Teleutosori. • Presence of many Teleutospores in each Teleutosorus. • Teleutospore are Bicelled, Dikaryotic and Spindle shaped. BOTRVMSBKCAPK
  • 18. . PUCCINIA 17 V.S OF TELEUTOSORUS BOTRVMSBKCAPK
  • 19. . Ex.No:06 BRYOPHYTES 18 00-00-00 FUNARIA FUNARIA GAMETOPHYTE WITH SPOROPHYTE IDENTIFICATION: The Given Specimen is Identified as Funaria – Gametophyte with Sporophyte. REASONS FOR IDENTIFICATION: • Funaria is a Moss type of Bryophytes and also called Cord Moss • The plant body is Haploid Gametophyte and it consists of • Stem • Leaves and • Rhizoids • Presence of Green, Erect and Branched Stem • Presence of Green, Sessile and Oval shaped Leaves with Distinct Midrib. • Presence of Branched and Multicellular Root like Structures called Rhizoids. • Presence of Antheridial and Archegonial Branches in same Plant • Presence of Sporophyte with Foot, Seta and Capsule in Archegonial Branch BOTRVMSBKCAPK
  • 20. . FUNARIA 19 GAMETOPHYTE WITH SPOROPHYTE . BOTRVMSBKCAPK
  • 21. . V.S OF ANTHERIDIAL HEAD OF FUNARIA 20 IDENTIFICATION: The Given Slide is Identified as Funaria- V.S of Antheridial Head. REASONS FOR IDENTIFICATION: • The Tip of Antheridial Branch of Funaria is called Antheridial Head. • Presence of many Antheridia along with Paraphyses and also surrounded by Perichaetial leaves. • Presence of Club shaped Antheridium • Presence of Androcyte Mother Cells in Antheridium which protected by a Jacket layer • Each Fertile Androcyte Mother Cell produces Two Male Gametes called Antherozoids. BOTRVMSBKCAPK
  • 22. . FUNARIA 21 V.S OF ANTHERIDIAL HEAD BOTRVMSBKCAPK
  • 23. . FUNARIA V.S OF ARCHEGONIAL HEAD 22 IDENTIFICATION: The Given Slide is Identified as Funaria- V.S of Archegonial Head. REASONS FOR IDENTIFICATION: • The Tip of Archegonial Branch of Funaria is called Archegonial Head. • Presence of many Archegonia along with Paraphyses and also surrounded by Perichaetial leaves. • Presence of Flask shaped Archegonium with short Stalk • Presence of a Ventral Canal Cell and a female gamete called Egg in Swollen Venter of Archegonium. • Presence of 8-12 Neck Canal Cells in Narrow Neck of Archegonium. • Presence of 4 Lid or Cover Cells in the mouth of the Neck. BOTRVMSBKCAPK
  • 24. . FUNARIA 23 V.S OF ARCHEGONIAL HEAD BOTRVMSBKCAPK
  • 25. . FUNARIA L.S OF CAPSULE 24 IDENTIFICATION: The Given Slide is Identified as Funaria – L.S of Capsule. REASONS FOR IDENTIFICATION: • It is a Pear-Shaped part of Sporophyte of Funaria. • Presence of Lower Sterile Part is called Apophysis. • Presence of Middle Fertile Part is called Theca . • Presence of Cap like Terminal part is called Lid. • Presence of Spore Sac in Theca. • The Spore Sac contains many Spore Mother Cells. • Each Spore Mother Cell undergoes Meiosis to from Four Haploid Spores BOTRVMSBKCAPK
  • 26. . FUNARIA 25 L.S OF CAPSULE BOTRVMSBKCAPK
  • 27. . Ex.No:07 PTERIDOPHYES 26 00-00-00 SELAGINELLA SELAGINELLA -HABIT IDENTIFICATION: The Given Specimen is Identified as Selaginella Habit. REASONS FOR IDENTIFICATION: • Selaginella is Perennial Herb and commonly called Spike Moss. • Presence of Prostrate and Dichotomously Branched Stem • Presence of Heterophyllous Leaves • Presence of tongue shaped structure called Ligule at the base of leaf. • Presence of Adventitious Root System for Fixation and Absorption. • Presence of Rhizophores from the forking place of stem. • Presence of Reproductive Structures at the tip of branches called Cones or Strobilus BOTRVMSBKCAPK
  • 29. . SELAGINELLA 28 SELAGINELLA T.S OF STEM IDENTIFICATION: The Given Specimen for Section is Selaginella Stem. REASONS FOR IDENTIFICATION: • Presence of Multicellular Unilayer Epidermis. • Presence of Cuticle and Absence of Stomata. • Presence of Outer Hypodermis made up of Sclerenchyma Cells in Cortex • Presence of Middle Parenchyma Cells in Cortex • Presence of Inner Modified Endodermis with many Air Chambers by Trabeculae. • Presence of Protostele that is xylem is surrounded by phloem. • Presence of Exarch and Diarch Xylem . • Presence of Tracheids in xylem. • Presence of Sieve Cells in Phloem. • Absence of Pith. BOTRVMSBKCAPK
  • 30. . SELAGINELLA 29 SELAGINELLA T.S OF STEM BOTRVMSBKCAPK
  • 31. . SELAGINELLA 30 SELAGINELLA L.S OF CONE IDENTIFICATION: The Given Slide is Identified as Selaginella- L.S of Cone. REASONS FOR IDENTIFICATION: • Cones are Asexual Reproductive Structures of Selaginella present at the tip of branches. • Presence of Numerous Spirally Arranged Sporophylls in Cone axis of Cone • Presence of Microsporangium in its axils of Microsporophyll. • Presence of Megasporangium in its axils of Megasporophyll. • Presence of Ligule at the base of Both Sporangium. • In Microsporangium, the Microspore Mother Cells Undergoes Meiosis and Produce Numerous Haploid Microspores. • In Megasporangium, the Single Functional Megaspore Mother Cell Undergoes Meiosis to Produce Only 4 Haploid Megaspores. BOTRVMSBKCAPK
  • 32. . SELAGINELLA 31 SELAGINELLA L.S OF CONE BOTRVMSBKCAPK
  • 33. . Ex.No:08 GYMNOSPERM 32 00-00-00 PINUS PINUS -LONG SHOOT WITH DWARF SHOOT IDENTIFICATION: The Given Specimen is Identified as PINUS -LONG SHOOT WITH DWARF SHOOT REASONS FOR IDENTIFICATION: • Pine Tree is a Conical, Tall, and Evergreen . • The Branches are Two types namely Long Shoots and Dwarf shoots • The Long Shoots develops from the Main Stem and also called Branches of Unlimited Growth. • The Long Shoot is covered by Scale Leaves. • The Dwarf Shoots develops from the Long Shoot and also called Branches of Limited Growth • The Dwarf Shoot is covered by Scale Leaves and End with Foliage Leaves or Pine Needles. • The Dwarf Shoot with many Pine Needles is called Spur Shoot or Foliar Spur BOTRVMSBKCAPK
  • 34. . PINUS 33 PINUS -LONG SHOOT WITH DWARF SHOOT BOTRVMSBKCAPK
  • 35. . PINUS 34 PINUS T.S OF NEEDLE IDENTIFICATION: The Given Specimen for Section is Pinus Needle. REASONS FOR IDENTIFICATION: • Presence of outer Multicellular Unilayer Epidermis. • Presence of Thick Cuticle • Presence of Sunken Stomata. • Presence of Outer Hypodermis made up of 2-3 layers of Sclerenchyma cells in Mesophyll. • Presence of Arm Parenchyma cells in the Middle of Mesophyll. • Presence of Two Resin Canals in Mesophyll. • Presence of Multilayered Pericycle. • Presence of Two Open and Collateral Vascular Bundles. • Presence of Phloem towards Upper side, Xylem towards Lower side and Cambium present between Xylem and Phloem of each Vascular Bundle. BOTRVMSBKCAPK
  • 36. . PINUS 35 T.S OF PINUS NEEDLE BOTRVMSBKCAPK
  • 37. . PINUS 36 PINUS MALE CONES or L.S OF MALE CONE IDENTIFICATION: The Given Specimen is Identified as Pinus-Male Cone REASONS FOR IDENTIFICATION: • Male Cones are Male Reproductive Organs of Pinus. • Formed in Clusters at the Tip of Long Shoot. • Made up of numerous Microsporophyll that arranged spirally in Cone Axis of Cone. • Presence of Two Megasporangia in Each Microsporophyll on its lower side. • Presence of numerous Microspore Mother Cells in each Microsporangium. • The Microspore Mother Cells undergo meiosis and produce numerous Haploid Winged Microspores. BOTRVMSBKCAPK
  • 38. . PINUS 37 PINUS MALE CONE. BOTRVMSBKCAPK
  • 39. . PINUS 38 PINUS FEMALE CONES or L.S OF FEMALE CONE IDENTIFICATION: The Given Specimen is Identified as Pinus-Female Cone REASONS FOR IDENTIFICATION: • Female Cones are Female Reproductive Organs of Pinus. • Present at the base of Long Shoot in Few Numbers. • Presence of numerous Megasporophylls, arranged spirally in Cone Axis of Cone. • Each Megasporophyll made up of Bract Scale and Ovuliferous Scale. • Presence of Two Megasporangia or Ovules at the base on its upper surface of Ovuliferous Scale • Presence of only one Functional Megaspore in Each Megasporangium. BOTRVMSBKCAPK
  • 40. . PINUS 39 PINUS FEMALE CONES BOTRVMSBKCAPK
  • 41. . PINUS 40 PINUS L.S OF OVULE IDENTIFICATION: The Given Specimen is Identified as Pinus-Female Cone REASONS FOR IDENTIFICATION: • The Megasporangium or Ovule consists of Outer Integument and Inner Nucellus • The Inner Nucellus is a Nutritive Tissue. • The Integument Leaves an Opening is called Micropyle • The Female Gametophyte Develops inside the Nucellus with 3 to 5 Female Sex Organs called Archegonia towards the Micropylar end. • Each Archegonium is Flask Shape and it consists of Venter and Neck • Venter is a Basal Swollen Part and it has a Ventral Canal Cell and an Egg • Egg is Haploid and Non-Motile Female Gamete. • Neck is a Short Upper Part Has No Neck Canal Cell. BOTRVMSBKCAPK
  • 42. . PINUS 41 PINUS L.S OVULE BOTRVMSBKCAPK
  • 45. . EX.NO:09 HYDROPHYTES 44 00-00-00 FREE FLOATING HYDROPHYTES IDENTIFICATION: The Given Specimen is Identified as Eichhornia ECOLOGICAL ADAPTATION: • It is Free Floating Hydrophytes. • It contacts Water and Atmosphere. • Presence of Well Developed Adventitious Roots for Balancing the Plants in Water. • Presence of Swollen Petioles For Floating the Plants in Water. • Presence of Root Pockets For Balancing the Plants in Water. BOTRVMSBKCAPK
  • 47. . 46 SUBMERGED FREE FLOATING HYDROPHYTES IDENTIFICATION: The Given Specimen is Identified as Ceratophyllum. ECOLOGICAL ADAPTATION: • It is Submerged Floating Hydrophytes. • It contacts only water. • Presence of Dissected Leaves that used to Avoid Damages from Water Current. • Absence of Roots due to the entire body contact only with water and involved in Absorption. • Presence of Slender Stem that used to Avoid Damages from Water Current by easily bending. BOTRVMSBKCAPK
  • 49. . 48 ROOTED FLOATING HYDROPHYTES IDENTIFICATION: The Given Specimen is Identified as Lotus ECOLOGICAL ADAPTATION: • It is Rooted Floating Hydrophytes. • It contacts with soil, water and air. • Presence of Underground Stem. • Presence of Long Petiole that used to bring out the Leaves on the surface of Water. BOTRVMSBKCAPK
  • 51. . 50 ROOTED SUBMERGED HYDROPHYTES IDENTIFICATION: The Given Specimen is Identified as Vallisneria. ECOLOGICAL ADAPTATION: • It is Rooted Submerged Hydrophytes. • It contacts soil and water. • Presence of Ribbon Shaped Leaves that used to Avoid Damages from Water Current. • Presence of Poorly Developed Roots for Fixation. • Presence of Slender Stolen Stem that used to Avoid Damages from Water Current. BOTRVMSBKCAPK
  • 53. . 52 ROOTED EMERGENT HYDROPHYTES IDENTIFICATION: The Given Specimen is Identified as Sagittaria. ECOLOGICAL ADAPTATION: • It is Rooted Emergent Hydrophytes. • It contacts soil, water and air. • Presence of Heterophyllous Leaves. • Presence of Arrow Shaped normal Leaves above the Water Level. • Presence of Strap Shaped Modified Leaves below the Water Level that used to Avoid Damages from Water Current. • Presence of Well Developed Roots for Fixation and Absorption. BOTRVMSBKCAPK
  • 55. . EX.NO:10 T.S OF EICHHORNIA PETIOLE (T.S) 54 00-00-00 IDENTIFICATION: The Given Specimen for Section is Eichhornia Petiole. REASONS FOR IDENTIFICATION: • Presence of Well Developed Epidermis made of Thin Walled Cells • Presence of Thin Cuticle. • Presence of Well Developed Multilayered Hypodermis made of Parenchyma Cells • Presence of Loosely Packed Parenchyma Cells in Cortex with Many Air Chambers. • Presence of Poorly Developed Vascular Bundles Scattered in Cortex. • Presence of Not Well Differentiated Xylem and Phloem in each Vascular Bundle. BOTRVMSBKCAPK
  • 56. . T.S of EICHHORNIA PETIOLE 55 BOTRVMSBKCAPK
  • 57. . EX.NO:11 T.S OF HYDRILLA STEM 56 00-00-00 HYDRILLA STEM (T.S) IDENTIFICATION: The Given Specimen for Section is Hydrilla Stem. REASONS FOR IDENTIFICATION: • Presence of Loosely Packed Epidermis made of Thin Walled Cells • Absence of Cuticle. • Absence of Stomata. • Presence of Few layered Hypodermis made of Parenchyma Cells • Presence of Loosely Packed Parenchyma Cells in Cortex with Many Air Chambers. • Presence of Poorly Developed Vascular Tissue. • Presence of Not Well Differentiated Xylem and Phloem in Vascular Tissue. BOTRVMSBKCAPK
  • 58. . T.S of HYDRILLA STEM 57 BOTRVMSBKCAPK
  • 59. . EX. NO:12 XEROPHYTES 58 00-00-00 DROUGHT ESCAPING XEROPHYTES IDENTIFICATION: The Given Specimen is Identified as Solanum xanthocarpum ECOLOGICAL ADAPTATION: • It is a Drought Escaping Xerophytes • It is an Annual Plant, Complete their Life Cycle in Favorable Season. • During Rainy Season, it germinate from Seeds, Grow, Reproduce and Die • It Escapes from Dry season in the form of Seed with thick Seed Coat. BOTRVMSBKCAPK
  • 61. . 60 DROUGHT ENDURING XEROPHYTES STEM SUCCULENT IDENTIFICATION: The Given Specimen is Identified as Opuntia ECOLOGICAL ADAPTATION: • It is a Stem Succulent Drought Enduring Xerophytes. • It is a Perennial Plant. • It Undergo the Dry Seasons by Storage of water during rainy season. • It has Water Storing Parenchymatous Tissue in Stem. • The Stem is Succulent due to the storage of water in the Stem. • The leaves are modified into Spines for reduce transpiration • The Succulent Stem becomes Flat, Green and Carry the Function of leaves called Phylloclade. BOTRVMSBKCAPK
  • 63. . 62 DROUGHT ENDURING XEROPHYTES LEAF SUCCULENT IDENTIFICATION: The Given Specimen is Identified as Aloe ECOLOGICAL ADAPTATION: • It is a Leaf Succulent Drought Enduring Xerophytes. • It is a Perennial Plant. • It Undergo the Dry Seasons by Storage of water during rainy season. • It has Water Storing Parenchymatous Tissue in Leaves. • The Leaves are Succulent due to the storage of water. . BOTRVMSBKCAPK
  • 65. . DROUGHT ENDURING XEROPHYTES 64 ROOT SUCCULENT IDENTIFICATION: The Given Specimen is Identified as Asparagus ECOLOGICAL ADAPTATION: • It is a Root Succulent Drought Enduring Xerophytes. • It is a Perennial Plant. • It Undergo the Dry Season by Storage of water during rainy season. • It has Water Storing Parenchymatous Tissue in Roots. • The Roots are Succulent due to the storage of water. . BOTRVMSBKCAPK
  • 67. . DROUGHT RESISTANT XEROPHYTES 66 IDENTIFICATION: The Given Specimen is Identified as Casuarina ECOLOGICAL ADAPTATION: • It is a Drought Resistant Xerophytes or True Xerophytes • It is a Perennial Plant. • It Resist Extreme Drought, by Developing Special adaptation in their Morphology, Anatomy and Physiology. • Leaves are modified in to Scales to Reduce Transpiration. • The main stem is Woody. • The Branches are Green and involved in Photosynthesis. • Stomata are Sunken in Branches. . BOTRVMSBKCAPK
  • 69. . 68 EX.NO:13 T.S OF NERIUM LEAF 00-00-00 T.S OF NERIUM LEAF IDENTIFICATION: The Given Specimen for Section is Nerium Leaf. REASONS FOR IDENTIFICATION: • Presence of Multilayered Epidermis made of Thick Walled Cells • Presence thick Cuticle. • Presence of Sunken Stomata in Lower Epidermis • Presence of Trichomes in Stomata. • Presence of Well Developed Mesophyll and Differentiated in to Upper Palisade Parenchyma and Lower Spongy Parenchyma. • Presence of Well Developed Vascular Tissue and Differentiated in to Xylem and Phloem . BOTRVMSBKCAPK
  • 70. . 69 T.S OF NERIUM LEAF . BOTRVMSBKCAPK
  • 71. . EX.NO:14 T.S OF CASURAINA STEM 00-00-00 70 T.S OF CASURAINA STEM IDENTIFICATION: The Given Specimen for Section is Casuarina Stem. REASONS FOR IDENTIFICATION: • Presence of Well Developed Epidermis made of Thick Walled Cells • Presence thick Cuticle. • Presence of Sunken Stomata. • Presence of Epidermal Hairs in Stomata. • Presence of Multilayered Hypodermis made of Sclerenchyma Cells • Presence of Closely Packed Parenchyma Cells in Cortex. • Presence of Many Well Developed Vascular Bundles arranged in Regular Rings. • Presence of Well Differentiated Xylem, Cambium and Phloem in each Vascular Bundle. • Presence of Pith. . BOTRVMSBKCAPK
  • 72. . 71 T.S OF CASURAINA STEM . BOTRVMSBKCAPK
  • 73. . EX.NO:15 00-00-00 HALOPHYTES 72 PNEUMATOPHORE IDENTIFICATION: The Given Specimen is Identified as Pneumatophore of Rhizophora ECOLOGICAL ADAPTATION: • Pneumatophore is an additional Aerial Root for Respiration. • The Pneumatophores are Aerial Negatively Geotropic roots that develops from the horizontal lateral roots and Comes out of the surface of water or mud • Presence of Lenticels or Pneumatothodes in Pneumatophore for Gas exchange during Respiration • Presence of Arenchyma tissue in Pneumatophores for Storage and diffusion of Air to the Lower part of root. . BOTRVMSBKCAPK
  • 75. . 74 VIVIPAROUS GERMINATION IDENTIFICATION: The Given Specimen is Identified as Viviparous Germination in Avicennia ECOLOGICAL ADAPTATION: • The Seeds Starts to Germinate when they Attached to the Plant is called Viviparous germination • In Mangrove Halophytes, the Saline Water is Unsuitable for Seed Germination and Early Growth of Seedlings • The Embryo of the Seed Grows and Develops in to Seedlings with in the Fruit when the Fruit is Attached to the Plant • The Seedling consists of a Club shaped Hypocotyle and a Downwardly Pointed Radicle • After the Hypocotyle attain the length of 50-75 cm, the Seedlings fall vertically down and fixed in the soil or mud and grow • The upper part of the Hypocotyle produces new shoot and the Radicle Produces New Roots of the Seedlings with in Few Hours BOTRVMSBKCAPK
  • 76. . 75 Viviparous Germination in Avicennia . BOTRVMSBKCAPK