Tissue Culture, Single Cell Protein And Bio Fortification Test

Tissue Culture, Single Cell Protein And Bio Fortification

This is online test 02 for CBSE class 12 Biology Strategies for Enhancement in Food Production (Tissue culture, single cell protein and bio fortification).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Explant is required to be disinfected before placing in culture medium. This is done by
  • A
    Autoclaving
  • B
    Clorax or hypochloride
    Correct
  • C
    Ultra violet rays
  • D
    X-rays
2
Resistance to a virus can be obtained by inoculating a host with
  • A
    Gene for viral nuclease
  • B
    Gene for virus resistance
  • C
    Gene for viral protein
    Correct
  • D
    All of the these
3
Which of the following can yield a completely haploid plant
  • A
    Stem apical meristem
  • B
    Anther
    Correct
  • C
    Root tip
  • D
    Carpel
4
The technique of tissue culture and somatic hybridization offer vast potential for manipulation of plants
  • A
    In situ to produce new species
  • B
    In situ to produce new varieties
  • C
    In vitro to produce new species
  • D
    In vitro to produce new varieties
    Correct
5
Procedure between formation of plantlets in culture and establishment of seedlings in the field is called
  • A
    Somatic transfer
  • B
    Hardening
    Correct
  • C
    Transgene
  • D
    Regeneration
6
Single cell protein (SCP) is
  • A
    Protein obtained from unicellular organisms.
  • B
    Protein obtained from a clone of cells
  • C
    Biomass got from microorganisms
    Correct
  • D
    Protein obtained from biomass of microorganisms
7
Somatic hybrids can be developed by
  • A
    All of the above
  • B
    Hybridizing flowers of two different plants
  • C
    Fusing male and female gametes of two different plants
  • D
    Fusing isolated protoplasm from two different varieties of plants
    Correct
8
Micro-propagation is the method of producing thousands of genetically identical plants through
  • A
    Hybridization
  • B
    Bagging
  • C
    Emasculation
  • D
    Tissue culture
    Correct
9
Assertion: Multiple shoots are produced in meristem culture. Reason: Culture media contains cytokines for overcoming apical dominance.
  • A
    Both assertion and reason are correct
    Correct
  • B
    Assertion and reason are correct but reason does not explain assertion
  • C
    Assertion is correct but reason is incorrect
  • D
    Both assertion and reason is incorrect
10
Greatest benefit of shoot tip (meristem) culture is. Select the correct statement. a. Production of virus free plants. b. Development of somaclonal variations. c. Development of transgenic plants. d. Large callus formation.
  • A
    Only statement ‘c’
  • B
    Only statement ‘b’
  • C
    Only statement ‘a’
    Correct
  • D
    Only statement‘d’