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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.
Explain Strengthening the public health measures? Parasitic infestations and protozoal infections cause iron deficiency through loss of blood or destruction of red blood cells.
Explain the Occurrence of Vitamin B 1 Vitamin B 1 occurs widely in the vegetable kingdom. The richest sources for vitamin B 1 , as you may already know, are yeast, grain ge
Q. Duration limit of the QRS? The duration of the QRS is usually reduced slightly during exercise. Because catecholamines increase conduction velocity in the Purkinje fibers an
Determine the Strengths of Full Battery Measures 1) Wide range of scores allow differential diagnosis in various cognitive disorders 2) More reliable, and sensitive 3) Br
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ME T AMORPHOSIS The differentiation results in the formation of larva / infant. The formation of adult from the larva / infant is called as metamorphosis. The metamorph
At 1 AM, an impermeable membrane separates a 1 liter solution of 1M NaCl in the left compartment from a 1 liter solution containing both 1M NaCl and 1M KCl in the right compartment
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