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EXCRETION IN FLATWORM -
Main organs are flame cells, having bundle of cillia.
It receives solute and water from surrounding tissue fluid by ultra filtration & discharge the filtrate into nephredial ducts.
Here reabsorption occur. Excretory material are given out through excretory pore.
Nutritional and Infections The interaction between nutrition and infection is synergistic - that is nutritional deficiency lowers resistance to infection and infection ag
Polyphyletic Theory - Metazoa This theory was suggested by Greenheig (1959) and some other workers. According to this theory, sponges, coelenterates, ctenophores and flatworms
Conventional amphotericin Amphotericin B deoxycholate (Fungizone, and others), the old non-lipid formulation of amphotericin, is by far the least expensive, but the developmen
Describe Genetic Recombination ? Genetic recombination, which provides the variation necessary for evolution, can occur through a variety of processes during cell reproduction:
what are golgi apparatus
Origin and Evolution of Metazoa Most of the early metazoans were soft bodied and so their fossils are rare. The extremely fragmented fossil record does not shed any specific l
Define the Need for classification of Plants and Animals? First of all there is a need to know what classification is? Let us define in simple term. Classification is placing o
STEROID S - These are derived lipids. Cholesterol is must in formation of steroid hormones. In steroids cyclopentanoperhydrophenentherene nucleus ring present. S
EMBO L Y - The embolic morphogenetic movements are concerned with the inward migration of prospective endodermal and mesodermal blastomeres from the external surface of blast
Sources of Water Pollution There are natural sources of water pollutants such as mineral ores from rocks, chemicals, from mines and gases from atmosphere. But we will conside
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