CLASSIFICATION OF ALGAE BY G.M SMITH

PRESENTED BYABOLI VICHARE

M.SC PART - 1

Contents :-Introduction of algae

Classification of algae

Introduction of division chlorophyta

Introduction of division euglenophyta

Introduction of division pyrrophyta

Refrrence

WHAT IS ALGAE?????????

Algae is an autotrophic plant which prepare food by photosynthesis.

CLASSIFICATION OF ALGAE

DIVISION CLASS

CHLOROPHYTA CHLOROPHYCEAE , CHAROPHYCEAE

EULENOPHYTA EULENOPHYCEAE

PYRROPHYTA CRYPTOPHYCEAE, DESMOPHYCEAE, DINOPHYCEAE

CHRYSOPHYTA XANTHOPHYCEAE, CHRYSOPHYACEAE, BACILLARIOPHYCEAE

PHAEOPHYTA ISOGENERATAE, HETEROGENERATAE, CYCLOSPORAE

CYANOPHYTA MYXOPHYCEAE

RHODOPHYTA RHODOPHYCEAE

Division :- Chlorophyta

Habit :-Fresh water algae (mostly) & as well as Marine water algae

Pigments :- Chlorophyll a, chlorophyll b, carotin & xanthophylls

Reserve food material :- Accumulate starch as photosynthetic reserve.

Range of thallus :- Unicellular & Multicelluar

Reproduction :- Asexual & Sexual

CHLOROPHYTA

Chlorophyceae

Charophyceae

Chlorophyceae• Habit :- Fresh water & marine

water algae • Pigment :- Chl.a , Chl.b ,

Xanthophyll , Carotin • Reserve food material :-

Accumulate starch as photosynthetic reserve.

• Range of thallus :- Always multicellular

• Reproduction :- Asexual

Order’s of Class Chlorophyceae :-

1. Volvocales2. Tetrasporales3. Ulotrichales4. Ulvales5. Schizogoniales6. Cladophorales7. Oedogoniales8. Zygnematales9. Chlorococcales10.Siphonales11.Siphonocladiales

VOLVOCALES :- EG:- VOLVOX

TETRASPORALES:-EG :- TETRASPORA

ULOTRICHALES :-EG:-ULOTHRIX

ULVALES :-EG:- ULVA

Schizogoniales :- Habit :- Fresh water as well as marine

water algaePigments :- Chl.a , Chl.b (Single stellate

chloroplast) Reserve food material :- Accumulate

starch as photosynthetic reserve. Range of thallus :- Filamentous, plate

like or solid cylinders.Reproduction :- No sexual reproduction &

Asexual reproduction is by means of aplanospores & akinetes.

Eg. Praaiola mexicana

CLADOPHORALES:-EG:- CLADOPHORA

OEDOGONIALES :-EG:- OEDOGONIUM

ZYGNEMATALES :-EG:- ZYGNEMA

CHLOROCOCCALES :-EG:- CHLOROCOCCUM

SIPHONALES :-EG :-VAUCHARIA

SIPHONOCLADIALES :-EG:-VALONIA

Charophyceae :- Habit :- Fresh water as well as marine

water algae Pigments :- Chl.a , Chl.b Reserve food material :- Accumulates

starch as photosynthetic reserve. Range of thallus :- Regular succession

of nodes & internodes , branched thallus.

Reproduction :- Sexual reproduction is oogamous.

Eg. Chara

Division :- EUGLENOPHY

TA

Habit :- Fresh water algaePigments:- Chlorophyll & carotinoids. Reserve food material :- An insoluble carbohydrate relate to starch.Range of thallus :- Motile cells have more than two flagella. Reproduction :- sexual reproduction seen in only one species & asexual reproduction is cresting stages (cysts).

Order’s of class Euglenophyta:-

Euglenales Colaciales (Euglenocapsales)

EUGLENALES :-EG:- EUGLENA

COLACIALES(EUGLENOCAPSALES):-EG :- COLACIUM

Division:- PYRROPHYTA

Classes of division pyrrophyta :-

Class 1. CryptophyceaeClass 2. DesmokontaeClass 3. Dinophyceae

Order’s of division pyrrophyta :-

Gymnodiniales Peridiniales Dinophysidales Rhizodiniales Dinocapsales Dinotrichales Dinococcales

GymnodinialesEg :- Gymnodium

PeridinialesEg :- Peridinium

DinophysidalesEg:- Dinophysis

RhizodinialesEg:- Dinamoebidium

DinocapsalesEg:- Gloedinium

DinococcalesEg:- Dinococcales

Reference :- Algae by HC Bold.

Text book of botany by O.P Sharma.

Algae by Vashishta.

www.wikipedia.com.

College Botany .