MCQ on Plant Biotechnology for Agriculture Exams

1. Non coding sequence of gene is called
   (a) Recon
   (b) Exon
   (c) Muton
   (d) Intron

2. Net charge of DNA molecule is
   (a) Positive
   (b) Negative
   (c) Neutral
   (d) None of these

3. Which of the following favors root induction in tissue culture?
   (a) Equal auxin to cytokinin ratio
   (b) High auxin to cytokinin ratio
   (c) Low auxin to cytokinin ratio
   (d) High cytokinin to auxin ratio

4. The progeny regenerated from tissue cultured plantlets is denoted as …
   (a) R0
   (b) R1
   (c) R3
   (d) R2

5. Agar is isolated from
   (a) Bacteria
   (b) Yeast
   (c) Weed
   (d) Algae

6. The most common carbon source used in plant tissue culture media is
   (a) Fructose
   (b) Sucrose
   (c) Glucose
   (d) Galactose

7. Shoot proliferation from callus is promoted by
   (a) IAA/NAA
   (b) BAP/BA
   (c) GA₃
   (d) ABA

8. Which of the following is a thermo labile compound
   (a) Plant growth regulators
   (b) Agar
   (c) Charcoal
   (d) Micronutrients

9. Which of the following is not a plant tissue culture nutrient medium
   (a) MS
   (b) Gamborg
   (c) B5
   (d) S9

10. The unorganized mass of the cells known as
    (a) Callus
    (b) Embryo
    (c) Proliferation
    (d) Quotient cell