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Class of Mollusca - Monoplacophora
Bilaterally symmetrical, with broad flat foot and single shell, mantle cavity has five to six pairs of gills; six pairs of nephridia of which two functions as gonoducts; radula present; sexes separate. Extant species are included in three genera. These are found at great depths in the sea. Also many fossil forms belonging to Cambrian and Devonian times are known. The monoplacophorans can he regarded as the ancestors of all molluscs. Monoplacophorans have following salient characters: The shell varies in shape from a flat shield to short cone: length of the animals ranges from 3 mm to 3 cm.
A) Maintain structural integrity of the cell B) Regulate the movement of substances into and out of the cell C) Provide communication between the cells D) ALl of the above
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What is Active Transport--Secretion This method is now a well accepted process of aqueous formation. The rate of aqueous humour formation depends on the rate of active solute
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Define Precautions for Check the Presence of Rhodamine B? 1. Sample should be clean and dry. 2. Dispose off the paraffin oil carefully, so that it does not contaminate food/
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What are the cell kinds that form the phloem? What are the major features of those cells? The major cells that form the phloem are the sieve elements and the companion cells an
Observing where soil bacteria live Dig up a clover, alfalfa or soy-bean plant. Carefully increase all the soil from the roots and see if you can find the little white nodules o
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