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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.
31. Special Orders Maria’s Food Service provides meals that nonprofi t organizations distribute to handicapped and elderly people. Here is her forecasted income statement for April
A company provides several different services to its customers from a single office. Fixed costs of the office, including staff costs, are absorbed into the company's service costs
Conan O'Brien Logging and Lumber Company owns 3,300 acres of timberland on the north side of Mount Leno, which was purchased in 2000 at a cost of $650 per acre. In 2012, O'Brien be
Alternative to Total Overhead Variances There is an easier approach to overhead variances. In this approach, the overheads are NOT sub-divided into their fixed and variable e
The sale turnover and profit during two period were as following Period 1=Sales Rs.20 Laks, and Profit Rs.2 Laks Period 2=Sales Rs.30 Laks, and Profit Rs.4.Laks Calculate P/V Ratio
preparation of costsheet
some clarificationon how to compute closing stock and openning stock using marginal costing technique and absorption.
how to do it
advanced sums
L I M I T A T I O NS OF STANDARD COSTING 1. It may be very difficult to fix standards for all operations. 2. Incorrect standards may result in wastage of mo
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