Algae

Question 1

Aquatic Algae

Most algae grow in …, though, there are also …. algae
Water bodies differ due to varying … (from … to … to …. to …. and to …)
However, the various …. and the several … really affects … and other … present in …
Sea inhabits a …. collectively known as …

Answer 1

Aquatic Algae

Most algae grow in water, though, there are also sub aerial algae
Water bodies differ due to varying salt concentration (from sea water to fresh water to brackish water to brine-salt lakes and to salt pans)
However, the various water bodies and the several kinds of pollutants really affects algae and other organisms present in water.
Sea inhabits a large number of algae collectively known as SEAWEEDS

Question 2

Classification Of Algae with examples

Answer 2

1. Cyanophyta: Prokaryotic Algae, they are blue-green Algae
   E.g Nostoc, Oscillatoria, Anabaena
2. Chlorophyta E.g Chlamydomonas, Spirogyra, Chlorela
3. Phanophyta(Brown Algae) E.g Fucus, Sargassum
4. Xanthophyta(Yellow-Green Algae) E.g Botrydium, Vaucheria
5. Chrysophyta(Golden brown Algae) E.g Synura, Chromalaena, Mallomanas
6. Euglenophyta E.g Euglena, Trachelommas
7. Dinophyta E.g Ceratium, Peridinum
8. Crytophyta E.g Cryptomones, Chroomonas
9. Bucillariophyta E.g Diatoms, Fragilaria

Question 3

Characteristics Of Algae

In terms of simplicity
In terms of pigments
In terms of cellular structure
In terms of habitorial nature
In terms of cell wall
In terms of food reserve

Answer 3

They are simple plants without roots, stems and leaves
They have different types of chlorophyll and pigments.
Majority of them are unicellular while few are multicellular
They are mainly aquatic in nature
Algae’s cell wall is compose of a true cellulose
Reserved carbohydrate are usually starch and not glycogen ad in other organisms (like Fungi)

Question 4

Morphological Classification Of Algae with examples

Answer 4

1. Filamentous E.g Blue-green Algae (e.g Nostoc), Ulothrix
2. Thalloid E.g Ulva Fucus (Brown Algae)
3. Unicellular E.g Anacystis & Microcystis, Chlamydomonas
4. Colonial E.g Volvox
5. Heterotrichous E.g Ectocarpus, Coleochaete
6. Polysiphonoid E.g Red Algae

Question 5

Algae

They are more … and inhabit …,
.., … and … (they need … to … as they are … organisms)
They are …, they are … and can be …
The .. generations they exhibit include:

Answer 5

Algae

They are more primitive and inhabit ponds, lakes, streams and damp places (they need water to survive as they are water loving organisms)
They are thallophytes, they are thread-like and can be filamentous
The 2 generations they exhibit include:
Sporophytes
Gametophytes