Plant Tissue Culture Quiz Question with Answer

31. Polyethylene glycol is

  1. Fusogenic chemical
  2. Electrofusion stimulant
  3. Callus stimulant
  4. Differentiation stimulant

32. Protoplast are the cells devoid of

  1. cell membrane
  2. cell wall
  3. both cell wall and cell membrane
  4. none of these

33. Protoplasts can be produced from suspension cultures, callus tissues or intact tissues by enzymatic treatment with

  1. cellulotyic enzymes
  2. pectolytic enzymes
  3. both cellulotyic and pectolytic enzymes
  4. proteolytic enzymes

34. Somaclonal variations are the ones

  1. Caused by mutagens
  2. Produce during tissue culture
  3. Caused by gamma rays
  4. Induced during sexual embryogeny

35. Somatic hybridization is achieved through

  1. Grafting
  2. Protoplast fusion
  3. Conjugation
  4. Recombinant DNA technology

36. Subculturing is similar to propagation by cuttings because

  1. it separates multiple microshoots and places them in a medium
  2. it uses scions to produce new microshoots
  3. they both use in vitro growing conditions
  4. all of the abov

37. Synthetic seed is produced by encapsulating somatic embryo with

  1. Sodium Chloride
  2. Sodium alginate
  3. Sodium acetate
  4. Sodium nitrate

38. The ability of the component cells of callus to form a whole plant is known as

  1. Redifferentiation
  2. Dedifferentiation
  3. either a or b
  4. none of these

39. The enzymes required to obtain wall-free / naked protoplasts are

  1. Cellulase and Proteinase
  2. Cellulase and Pectinase
  3. Cellulase and amylase
  4. Amylase and Pectinase

40. The first transgenic crop was

  1. Pea
  2. Tobacco
  3. Flax
  4. Cotton

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