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What is economic importance of protozoa
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What is economic
importance of protozoa
The protozoa are acellular, microscopic
organisms found everywhere, in water,
soil, on the body of plants and animals.
Although they are minute and apparently
insignificant,
but
they
are
of
considerable economic value to the
mankind.
The protozoa are useful in the following
ways:
1.
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Protozoa provide food for insect larvae,
crustaceans and worms, which are taken
by large animals like fishes, lobsters,
clams, and crabs, which are eaten by
man. Thus they form sources of food
supply to man both directly and
indirectly.
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Several protozoa control harmful insects
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Food
Certain protozoa like Trichonympha and
Colonymphya etc. live in the gut of
termites which help in the digestion of
cellulose. The digested cellulose is
utilized by the host.
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by persisting their bodies.
4. Helpful in Sanitation
A large number of protozoa living in
polluted water feed upon waste organic
matters and thus purify it.
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Many protozoa feed upon bacteria and
play important role in the sanitary
bettermant and keeping water safe for
drinking {Kudo, 1947).
5. Industry
The skeletal deposits of marine protozoa
(Foraminifera and Radiolaria) form
oceanic ooze at the sea-bottom. About
30% of oceanic bed is covered with the
Globigerina ooze, these skeletal deposits
are put to many uses. Some are
employed as filtering agents, others are
made into chalk and still others are used
for abrasives.
6. Building material
The skeletal deposits in due course of
time change in to the limestone rock.
Limestone is provided by the
Globigerina ooze, such as that of cliffs
of Dover, which have played an
important role in the defense of England.
Camerina
(Formally
known
as
Nummulites, are the largest protozoa,
which form limestone. The pyramids of
Egypt are made largely of this
Nummulitic
lime-stones.
Thus,
limestone-beds are used as building
material.
7.
Oil Exploration
Petroleum is organic origin. The skeletal
deposit of Formmifera and Radiolaria
are often found in association with oil
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deposits. In this manner they help in the
exact location of oil.
8.
Scientific Study
Many protozoa are used in biological
and medical researches. A Holotricha,
Tetrachymena geleii is used in
nutritional research. The effects of
various foods and poisons have been
investigated on this protozoan.
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Tags: economic importance, Protozoa
Posted in General Zoology, Invertebrate Zoology
on Jun 20th, 2011
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