Questions For 03 july-zoology


Guidelines cum Instructions for Daily Answer Writing
Daily 5 to 7 questions will be posted around 11.30 pm
No question on Sunday


Instructions
·        All questions are compulsory.
·        Adhere to world limits wherever specified.
·        Draw neat and well labelled diagrams. No beautification required.
·        Don’t use colour pens only pencil colour if you are an extraordinary student.
·        Try to finish all questions within 2 hours in written.
·        Answers will be reviewed every day at 9 pm.






Questions DAY 01- 3rd July 2018

Q:-1 Discuss The followings    250 words (10x4) 

  1. Binomial nomenclature
  2. various types of coelom 
  3. Receptor mediated Endocytosis
  4. Theories of origin of Bilatria AND Radiata
Q:-2 Classify animal kingdom on the basis of various types of coelom and symmetry. Give  significance of coelom in physiological process in animals. (20)

Q:-3 what do you mean by Protostomes? compare it with Duetrostomes. Explain their evolution.(10)

Q:-4 What is NPC? Give its Ultra structure and how transport through it mediated? (15)
Q:-5 Discuss the various types of transport mechanism through cell membrane? Explain any one of them.(15)

Q:-6 Compare the structure of Nuclear membrane and Plasma membrane. Explain NOR briefly .(10)

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CANAL SYSTEM IN Porifera

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Canal system in Porifera (sponges) Body of all sponges is the perforated by large number of apertures through which water enters Inside body and flows through a system of criss-crossing canals collectively forming the canal system which is a characteristic feature of poriferans. Following types of canal systems are found in sponges: Ascon type, with flagellated spongocoel Sycon type, with flagellated radial canals Leucon type, with flagellated chambers Rhagon type, with conical shape and broad base ASCON TYPE This is the simplest type of canal system and is found in  Leucosolenia  and other homocoela. Ostia are present on the surface of body and lead directly into the spongocoel, which is lined by flagellated choanocyte cells. Spongocoel opens to the outside through a narrow circular opening, the  osculum  located at the distal free end of the sponge body. Water enters through ostia into spongocoel and goes out of body through the  osculum . SYCO...
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