IGNOU BBYET-143 December 2025 Previous Year Question Paper

Q1.(a) Write the botanical names of the following plants : 5x1=5 G@) Levant cotton

(ii) Coconut

(iii) Flax

(iv) Teak

(v) Sarpagandha

(b) Fill in the blanks : 5x1=5

(i) The potential of a plant cell to grow and develop into a whole new multicellular plant is described as

(ii) The technique of can be used to treat inherited genetic disorders.

(iii) 18 the study of genetic stability in the cryopreserved plant materials.

(iv) Ingo Potrykus developed the genetically engineered product

(v) Androgenesis or Gynogenesis can be used for the production of seeeeseeeeee Plants.

Q2.(a) Describe the process and genetic basis of the domestication of plants. 6

(b) Define the terms ‘Domestication syndrome’ and ‘Unconscious selection’.

Q3.(a) Describe the nutritional advantages and health benefits of legumes. 6

(b) What are the different health benefits of curcumin ?

Q4.(a) Describe the steps of organogenesis discussing the various factors regulating it. 5

(b) Differentiate between direct and indirect embryogenesis with the help of well labelled diagrams.

Q5.What are restriction enzymes ? Describe their types and applications.

Q6.(a) Give an overview of CRISPR-Cas9 technology with a schematic diagram. 5

(b) Mention the importance and limitations of CRISPR-Cas9 technology.

Q7.Write short notes on any four of the following : 4x2°=10 (@) Shuttle vectors

(ii) Random Amplified Polymorphic DNA

(ii) Bottleneck effect in population

(iv) Importance of medicinal plants

(v) Conservation of genetic diversity 5x1=5 4927

(10)