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These are monoglyceride compounds.
They are chemically
(due to absence of double bonds) and insoluble in water.
they become soft and pliable.
they turn hard and water resistant.
of plants and animals.
Most land plants
possess wax as
over fruits and other soft organs. It is also a component of cuticle over leaf surfae for reducing transpiration.
n floating leaves
the upper surface is covered by wax in order to prevent wetting and closing of stomata present on the upper surface.
(= lanoline) or
is a wax
secreted by cutaneous glands
in fur bearing animals for providing a protective water proof coating to fur.
Similarly water proof coating of wax occurs over feathers, human skin and insect skeleton.
, which consumes plankton in large quantity, comes to store the same lubricating wax,
used to be got form
. It is the hardest wax.
is secreted by worker bees from their
for building honey combs. It is formed by esterification of palmitic acid with mericyl and hexacosyl alcoholes. It's chemical name is
is a mixture of paraffin was (from petropleum) and stearic acid.
Cerumen or ear wax
is secreted by modified sweat glands or ceruminous glands present in the ear canal. It lubricates ear drum. It's more secretion is
Posted Date: 10/9/2012 5:13:37 AM | Location : United States
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