MCQ on Plant Biotechnology for various Agriculture Exams

1. The formation of an entire plant from cultured explants
   (a) Callus
   (b) Regeneration
   (c) Embryogenesis
   (d) Organogenesis

2. Excised plant portion used to initiate plant tissue culture
   (a) Callus
   (b) Medium
   (c) Explant
   (d) Cybrid

3. Regeneration of plant from tissue of actively dividing organ like stem tip
   (a) Shoot culture
   (b) Meristem culture
   (c) Organ culture
   (d) Cell culture

4. The growth of tissue of living organism in suitable culture medium
   (a) Cell culture
   (b) Organogenesis
   (c) Morphogenesis
   (d) Tissue culture

5. Commonly used gelling agent is
   (a) Gelatine
   (b) Vermiculite
   (c) Charcoal
   (d) Agar

6. Agarose powder isolated from
   (a) Bacteria
   (b) Fungus
   (c) Algae
   (d) Yeast

7. The development of a structure from an unorganized state to differentiated and organized state
   (a) Redifferentiation
   (b) Totipotency
   (c) Morphogenesis
   (d) All of these

8. For filter sterilization pore size should be ……
   (a) < 0.45 µ
   (b) > 0.45 µ
   (c) > 0.45 mm
   (d) > 25 mm

9. For explants sterilization …….% Mercuric chloride concentration generally used
   (a) 0.1–1.0%
   (b) 5–10%
   (c) 0.001–0.01%
   (d) 20–25%

10. Which of the following chemicals not used for sterilization of explants
    (a) Bromine water
    (b) H₂O₂
    (c) HgCl₂
    (d) Si