Question 16 of 16intermediate💡 UnderstandMCQ1 mark

Somatic clonal variation can be present in which of the following plants?

Exercise: EXERCISES - Multiple Choice Questions | Q: 17 | (Page 18)
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Explanation

Option (A) is correct because the textbook explicitly states that 'the genetic variations observed in plants regenerated from cultured somatic tissues are called somaclonal variations and such regenerated plants are known as somaclones.' The context clarifies that somaclonal variations arise when somatic tissues with genetic variations are used as explants for tissue culture, and these variations are expressed in newly regenerated plants. Options (B) and (C) are incorrect because somaclonal variations are specifically associated with tissue culture regeneration, not with plants generated through seeds or sexual reproduction involving fertilization.

Solution Steps

  1. Step 1: Identify the definition of somaclonal variations from the context - they are genetic variations observed in plants regenerated from cultured somatic tissues.

  2. Step 2: Note that these variations occur when somatic tissues are used as explants for tissue culture and are expressed in newly regenerated plants.

  3. Step 3: Eliminate options (B) and (C) as they involve sexual reproduction/seeds, not tissue culture regeneration.

  4. Step 4: Conclude that option (A) 'Plants regenerated through tissue culture' is the correct answer.

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