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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.
#quetion.. what is monopolar neuron
Q. List the functions of insulin? a) Insulin controls the level of the sugar (glucose) in the blood. b) Insulin permits cells to use sugar (glucose) for energy. Cells cannot
Lorica - body form Protozoans It is a covering which unlike the theca fits loosely around the organism. It is a cup, bell or vase-like structure with one opening through which
Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimum 100 words accepted#
Q. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat? How evolution does solve those problems?
Haustorial variations
Prior to the solving of the structure of DNA, Erwin Chargaff calculated the amounts of the four nucleotides (A, T,G,C) and made which of the following conclusions? A. All four
Systems of Human Body Many organs work in a coordinated'manner to form a system. For example in our-body the nose, the trachea and the lungs form the respiratory system. Table
What are the types of good in the demand curve? Some types of good are as follows: • Normal good: When incomes of consumers/households increase the quantity demanded wo
Q. What is the crossing over? And In which period of meiosis does this event occur? Crossing over is the eventual exchange of chromosomal fragments among homologous chromosomes
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