CLASSIFICATION OF ANGIOSPERMS Cytotaxonomy: Based of chromosome no, structure and behaviour
Chemotaxonomy: Based on chemical constitution of plants
Numerical Taxonomy: Done by computers; no. and codes were given to all
characters; each character is given equal importance
Character Algae Bryophy. Pteridop. Gymno. Angio.
Body Thalloid Thalloid True root, True root, True root,
Level stem stem stem
present present present
Main Haploid Haploid Diploid Diploid Diploid
plant
body
Life cycle Gametoph Gametoph Sporophyt Sporophyt Sporophyt
-ytic -ytic -ic -ic -ic
, Character Algae Bryophy. Pteridop. Gymno. Angio.
ECOLOGICAL IMPORTANCE OF ALGAE
Independe Gametoph Gametoph BOTH Sporophyt Sporophyt
nt Phase -ytic -ytic -ic -ic
Vascular Absent Absent Present Present Present
tissues
ALGAE
Characters Chlorophyceae Phaeophyceae Rhodophyceae
Colour Grass green Olive green to Red
Brown
Major Pigments Chl-a, b Chl-a, c; Chl-a, d; r-
Reproduction Carotenoids, Phycoerythrin
Xanthophyll
Vegetative: Fragmentation
Stored Food Starch (most); Mannitol; Floridean Starch
Asexual: Motile Zoospores (most common) oil droplets Laminarin (similar to
(some) glycogen and
Sexual: Fusion of 2 gametes amylopectin)
Isogamous: Flagellated (Ulothrix): Non-flagellated (Spirogyra) Cell Wall Cellulose (inner); Cellulose; Algin Cellulose; Pectin;
Anisogamous: Eudorina Pectin (outer) Poly-sulphate
Oogamous: Volvox, Fucus esters
Chemotaxonomy: Based on chemical constitution of plants
Numerical Taxonomy: Done by computers; no. and codes were given to all
characters; each character is given equal importance
Character Algae Bryophy. Pteridop. Gymno. Angio.
Body Thalloid Thalloid True root, True root, True root,
Level stem stem stem
present present present
Main Haploid Haploid Diploid Diploid Diploid
plant
body
Life cycle Gametoph Gametoph Sporophyt Sporophyt Sporophyt
-ytic -ytic -ic -ic -ic
, Character Algae Bryophy. Pteridop. Gymno. Angio.
ECOLOGICAL IMPORTANCE OF ALGAE
Independe Gametoph Gametoph BOTH Sporophyt Sporophyt
nt Phase -ytic -ytic -ic -ic
Vascular Absent Absent Present Present Present
tissues
ALGAE
Characters Chlorophyceae Phaeophyceae Rhodophyceae
Colour Grass green Olive green to Red
Brown
Major Pigments Chl-a, b Chl-a, c; Chl-a, d; r-
Reproduction Carotenoids, Phycoerythrin
Xanthophyll
Vegetative: Fragmentation
Stored Food Starch (most); Mannitol; Floridean Starch
Asexual: Motile Zoospores (most common) oil droplets Laminarin (similar to
(some) glycogen and
Sexual: Fusion of 2 gametes amylopectin)
Isogamous: Flagellated (Ulothrix): Non-flagellated (Spirogyra) Cell Wall Cellulose (inner); Cellulose; Algin Cellulose; Pectin;
Anisogamous: Eudorina Pectin (outer) Poly-sulphate
Oogamous: Volvox, Fucus esters
