Botany B.Sc. Part-1st ( Guide for 1st-Semester ) Previous Year Old Question Paper Jammu University, Under Graduation

B.Sc. Part-I Examination

B-I/3

21463

BOTANY

Course No. B

Time Allowed: 3 hours                                                                        Maximum Marks: 40

Note: The question paper carries three sections.

Section - I: Consists of one compulsory question with 7 parts, each carrying one mark. Answers should be restricted to one line only. (1 × 7 = 7)

Section - II: Has 10 short answer type questions, two from each unit. Candidates are required to attempt 5 questions, one from each unit. Each question carries 3 marks. (3 × 5 = 15)

Section - III: Has five questions. Attempt any three. Each question carries 6 marks. (6 × 3 = 18)

Support your answers with neat and labelled diagrams.

Section - I

1.      Discuss in brief (one line answer) (1 mark each)

(1 × 7 = 7)

a)      Cell wall

b)      Mitochondrial DNA

c)      tRNA

d)     Deletions

e)      Transcription

f)       Composite transposons

g)      Anaphase - I

Section - II

Note: Write short notes on (not more than 3 pages: 3 marks each)

(3 × 5 = 15)

Unit – I

2.      Structure and function of golgi bodies

            OR

Functions of plasma membrane

Unit – II

3.      Synaptonemal complex

            OR

Plasmids

Unit - III

4.      Structure and function of tRNA

                  OR

Tertiary structure of proteins

Unit - IV

5.      Inversions

      OR

Origin of wheat

Unit – V

6.      Dihybrid Cross

      OR

IS Elements

Section - III

Note: Give a detailed account of any three of the following (6 marks each)

(6 × 3 = 18)

7.      Organization and functions of nucleolus

8.      Structure and importance of telomeres

9.      Organization of DNA in eukaryotic chromosomes

10.  Types of transposable elements in eukaryotes

11.  Types of aneuploids. Give suitable examples. Discuss their meiotic behavior.