Microbiology and phycology question paper 2022 cbcs dibrugarh University

In this post is included to the Bsc 1^st question  Paper Under Dibrugarh University.Paper name is Microbiology and  Phycology.Where add the some question is likeshort notes on cell structure,Chlamydomnas,bacteria,RNA Viruses,Biotechnology,What is Flagella,Definition of Gram Positive,Archabacteria and Eubacteria etc.

 

2022

(Nov/Dec)

Botany

(Core)

Paper :-C-1

(Microbiology and Phycology)

Full Marks :53

Pass Mark-21

Time-3 hours

                                   The figures in the margin indicate  full marks for the questions

1.(a)Choose the  correct  answer of the following :                  1 into 3=3

(i)The principal  pigment in Phaeophyceae is phycoerythrin /fucoxanthin/xanthophylls/phycocyanin.

(ii)Female sex organ of Rhodophyceae is termed as carpogonium/oogonium/sporonium/archegonium.

(iii)The algae chara is called Stoneworth because its plant body is encrusted with calcium bicarbonate /calcium carbonate /calcium chloride/calcium oxalate.

(b)Fill in the blanks of the following :                                  1+1=2

(i)The nucleus  of the bacteria is called as ________

(ii)A bacterium without flagella is known as_______

2.Write short notes on any three of the following :                 4 Multiply 3= 12

(a)Cell structure  of Chlamydomnas .

(b)Role of algae in biotechnology.

(c) Nutrition types of bacteria.

(d)Structure  of RNA Virus.

Algae Classification of Algae by Fristch

3.What are the criteria based on which  algae  are classified  ?Give  a brief  account of the classification of algae suggested  by Fritsch.                                    3+9=12

                                                                     Or

Describes the mode of sexual reproduction of Oedogonium .Do these algae have an alternation of generation ?Draw  the diagram of the life cycle of Oedogonium.                        7+1+4=12

4.What do you mean by genetic recombination ?Give an Account of Conjugation in Bacteria .        3+9=12

                                                                  OR

Distinguish between the following:                     6+6=12

(a)    Archaebacteria and Eubacteria.

(b)   Gram-Positive and Gram-Negative bacteria.

 

5.What is bacteriophage ?Describes with diagram the lytic and lysogenic cycle of bacteriophage.    2+5+5=12

                                            OR

How are the viruses  classified ? Discuss the Baltimore”s system of classification of  viruses.     3+9=12

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