Plant Tissue Culture · Botany

Which gas is often responsible for the 'senescence' or leaf drop of plantlets within a sealed culture vessel?

  1. Oxygen
  2. Nitrogen
  3. Ethylene
  4. Carbon dioxide
Show answer and explanation

Correct answer: Ethylene

Ethylene is a gaseous plant hormone that can accumulate in sealed vessels. High levels induce premature aging, leaf yellowing, and growth inhibition in the cultured plantlets.

Difficulty: Medium Question 20 of 20

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