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Yields a gummy substance funerin which is used in the sizing
of textiles. Diatoms are very useful in industry. These are
useful in cement industry, in the manufacture of rubber and
blotting paper etc. these plays an important role in the
extraction of petroleum and are used as packing material of Br2.
Iodine is extracted from laminaria digitata.
1. Algae and N2 fixation :- these play an important role in
the biology of soil. These help in fixation of N2 e.g.
Nostoc oseillatoria Formosa.
2. Algae also maintain a proper balance of Co2 and O2 in
H2O. They undergo process of photosynthesis.
3. Algae and antibiotics chorella :- These play an important
role in the biology of soil. These help in fixation of N2
e.g. Nostoc oseillatoria Formosa.
4. Algae and antibiotics chorella :- Yields antibiotic
called chlorellin which is effective against gram +ve and
gram ?ve becteria.
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