TS Inter 2nd Year Botany Question Paper May 2022

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TS Inter 2nd Year Botany Question Paper May 2022

Time: 3 Hours
Max. Marks: 60

Section – A
10 x 2 = 20

Note:

  • Answer ANY TEN questions.
  • Each Question carries TWO marks.
  • All are very short answer-type questions.

Question 1.
Who proposed the ‘Lock and Key hypothesis’ and Induced fit hypothesis?

Question 2.
What is meant by bolting? Which hormone causes bolting?

Question 3.
Where does the photolysis of 1420 occur? What is its significance?

Question 4.
Explain the terms phenotype and genotype.

Question 5.
Who proposed the Chromosome Theory of Inheritance?

Question 6.
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?

Question 7.
In a typical DNA molecule, the proportion of Thymine is 30% of the N bases. Find out the percentages of other N bases.

Question 8.
What is the difference between exons and introns?

Question 9.
What are the components of a nucleotide?

Question 10.
Define true breeding. Mention its significance.

Question 11.
What is EcoRl? How does it function?

Question 12.
Name a microbe used for statin production. How do statins lower blood cholesterol level?

Question 13.
What is GEAC and what are its objectives?

Question 14.
Name any two industrially important enzymes.

Question 15.
What are fermentors?

Section – B
6 x 4 = 24

Note:

  • Answer ANY SIX questions.
  • Each Question carries FOUR marks.
  • All are of short answer type questions
  • Draw Labelled diagrams wherever necessary

Question 16.
Explain different types of cofactors.

Question 17.
Define RQ. Write a short note on RQ.

Question 18.
Write a note on agricultural/ horticultural applications of auxins.

Question 19.
Explain the Incomplete dominance with example.

Question 20.
Mention the advantages of selecting pea plant for experiment by Mendel.

Question 21.
Define and design a test cross.

Question 22.
Write a brief note on chromosomal mutations and gene mutations.

Question 23.
Write the important features of the Genetic code.

Question 24.
Draw the schematic /diagrammatic presentation of the Iacoperon.

Question 25.
What are the differences between DNA and RNA?

Question 26.
Write briefly on nucleosomes.

Question 27.
List out the beneficial aspects of transgenic plants.

Question 28.
Write short notes on restriction enzymes.

Question 29.
Give a brief account of Bt cotton.

Section – C
2 x 8 = 16

Note:

  • Answer ANY TWO questions.
  • Each Question carries FIGHT marks.
  • All are long answer type questions.
  • Draw labelled diagrams wherever necessary.

Question 30.
Explain the reactions of Krebs cycle.

Question 31.
Explain briefly the various processes of recombinant DNA technology.

Question 32.
Explain Calvin cycle.

Question 33.
Write brief essay on microbes in sewage treatments.

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