Multiple choice

Underground stems are useful for

  1. storing up reserve food

  2. vegetative propagation

  3. perennation

  4. all the above three
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Underground stems (tubers, rhizomes, bulbs, corms) serve multiple functions: they store reserve food materials like starch, enable vegetative propagation through buds, and help the plant survive unfavorable conditions (perennation). Since they perform all three functions, option D is the correct choice. Each individual option A, B, and C describes only one function.

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