Questions for 20 July Zoology

Q:-1What is restriction enzymes? Discuss its various types and explain its nomenclature by taking suitable examples. (15)

Q:-2 Give the general characteristics of phylum Mollusca and classify the phylum upto sub classes. (20)

Q:-3 Comment on feeding habit of Mollusca. How it is different from Feeding habit of Echinodermata. (20)

Q:-4 What is genetic library? Compare between cDNA and DNA library. (10)

Q:-5 Explain the process of making the recombinant DNA. Describe the various types of DNA vectors and explain which one is better and why? (15)

Q:-6 Explain the respiration process in classes of Mollusca with suitable diagrams. (15)

Comments

Post a Comment

More On Blog

CANAL SYSTEM IN Porifera

Image
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...
Read more