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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.
(a) Describe briefly how the following are used in the accounting for labour: (i) time sheets (ii) job cards. (b) The following details relate to the labour in a produ
mark-up of 25%
Marginal analysis finds to equalize the cost of producing one more item (marginal costs) with the revenue gained from selling one more item (marginal revenue).
A co has a standard costing system. the following are avaiable for september: actual quantity of direct materials purchased and used: 20,000 pounds Standard price of direct mater
Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended: Materials and supplies used Brass $75,000 Repair parts 16,000
Given the information that follows, prepare a cash budget for the XYZ Store for the first six months of 2010. All prices and costs remain constant. Sales are 90% for cre
Q. What are the advantages and disadvantages of free float? Advantages: It is one of the most suitable ER regimes for transitional countries that experience external shocks l
NSC Ltd. has a 31 May fiscal year-end. NSC disposed of its Information Systems Group (ISG) on 31 January 20X3. ISG had a net loss (after taxes) of $37,700,000 in 20X3, to the date
You are the manager of a firm that sells output at a price of $40 per unit. You are interested in hiring a new worker who will increase your firm's output by 2,000 units per year.
Learning Objective: After completing the project, the student will have gained familiarity, understanding and mastery of programming a realistic but simple application in Assembly
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