Multiple choice

Which one of the following is not a modification of stem?

  1. Tuber of potato

  2. Pitcher of Nephenthes

  3. Corm of Colocasia

  4. Rhizome of ginger
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tuber (potato), corm (Colocasia), and rhizome (ginger) are all modified underground stems that store food. The pitcher of Nepenthes is a modified LEAF, not a stem - it's a specialized insect-trapping structure. Since the question asks which is NOT a stem modification, the pitcher is the correct answer.

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