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Vorticella can first be seen by the naked eye, b.ut to study it place a prepared slide under the microscope. Focus it under low power, and observe it. You can see a large number of specimens attached to aquatic plants or some object by thread-like contractile stalks. Tliey appear like tiny balloons attached by strings. Now focus tlie slide under tlie high power of the microscope, and study tlie following cliaraclers carefully:
i) Vorticella has bell-shaped body with a long slender and conitractile stalk for attachment.
ii) Tlie free broad end of tlie body is the oral end, while the opposite narrow end is the aboral end.
iii) Tlie entire body is covered by a thin pellicle and the protoplasm is clearly distinguisliable into an outer ectoplasm and an inner'endoplasm.
iv) The bell margin is fringed with a circle of cilia, while tlie central Inass forms the peristomial disc, wliicli is separated from tlie margin by a sliallow circular depression called oral groove or peristome.
v) On one side of tlie groove the peristomial groove is extended into tlie interior of tlle bell forming a vestibule or tlie buccal cavity. At tlie inner end, the vestibule opens through the cytostome into the cytopharynx.
describe the procedures involved in payroll labour cost accounting
Which of the following are easy to trace to individual jobs?: A. direct materials and overhead B. direct materials and direct labor C. direct labor and overhead
SALES REVENUE VARIANCE (SRV) The word 'Sales Variance' is indicated by the expression 'operating profit variance due to sales' by ICMA. It is described as 'the difference betw
In January, 2008, Sanford Corporation purchased a patent for a new product for $1,200,000. The patent was valid for fifteen years but it was estimated to have a useful life of ten
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what are the accounting entries for interlocking and integrated systems of cost accounting?
Marvin's Motors Company (MMC) manufactures outboard motors for use on small to medium sized boats. MMC produces three models: the Standard, the Deluxe and the Performance. The comp
WORKED EXAMPLES OF EXPECTED CASH COLLECTIONS PATTERNS
Calculate Cost or Equivalent Units The given work in progress account concerns to the blending department of a company, a soft-drinks company for the month of January in 1999
exercise solution
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