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Q. What are the basic morphological features of echinoderms?
Echinoderms, as the name indicates (derma = skin, echino = spiny), are creatures with spines originated from an endoskeleton. Their endoskeleton is made of calcareous plaques that besides spines contain pedicellaria, small pincers used to clean the body and to help the capturing of prey. They also present a hydrovascular system known as the ambulacral system. Adult echinoderms have pentaradial symmetry the radial symmetry in these animals is secondary present only in adults.
Hepatitis B Vaccination against hepatitis B (Engerix-B - GlaxoSmithKline; Recombivax HB - Merck) is now a routine pediatric immunization in the US. It is recommended for previo
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S y s te m i c Diseases Diseases of the gastrointestinal tract The diseases of gastrointestinal system are manifested by abnormality in prehension, mastication and s
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Accumulation of phenylalanine and its catabolic products leads to central nervous system damage. The extent of damage caused to the brain depends on the time at which the insult oc
Pyramid of Energy - Ecological Pyramids When we wish to compare the functional roles of the trophic levels in an ecosystem, an energy pyramid is probably the most informative.
Q. Differentiate between adult and infant botulism? • Adult Botulism is prevalent amongst adults whereas Infant Botulism is prevalent in infants of less than one year of age.
Describe the tasks of various body systems in breaking down carbohydrates into glucose to fuel the cells work
Determine about the Soil and its importance Everyone knows about soil as a resource which fulfils the basic requirement of human kind by supporting variety of plants and other
What is the role of water in metabolism and photosynthesis I
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