Sample Questions — Differentiation, Dedifferentiation and redifferentiation.
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MCQ
In plant tissue culture, what term applies to parenchyma cells induced to divide?
✅ Correct Answer: D
Parenchyma cells regain division capacity in vitro—this is dedifferentiation.
MCQ
Assertion (A): Differentiation and development are fixed in plants.
Reason (R): Plants have determinate growth patterns.
✅ Correct Answer: D
Differentiation in plants is open and depends on cell position and environment,
hence not fixed. Plant growth may be determinate in some organs but differentiation itself
remains flexible.
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MCQ
Assertion (A): Cork cambium originates from mature parenchyma.
Reason (R): Parenchyma cells retain the ability to dedifferentiate.
✅ Correct Answer: A
Dedifferentiation allows mature parenchyma cells to regain division ability and form secondary meristems such as cork cambium.
MCQ
How does position in an organ affect cell fate during differentiation?
✅ Correct Answer: B
Final fate is location-specific in root/shoot apex.
MCQ
Which of the following best explains how interfascicular cambium forms?
✅ Correct Answer: B
Parenchyma becomes meristematic again under internal cues.
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