Read the given statements and identify the PGRs $X, Y$ and $Z$. $\mathrm{X}$ induces accumulation of salts…

Read the given statements and identify the PGRs $X, Y$ and $Z$. $\mathrm{X}$ induces accumulation of salts inside the cells. Y promotes rapid elongation of leaf bases and internodes in deep water rice plants. (iii) Application of $Z$ to leaves shall reduce transpiration.
  1. X-Auxin, Y-Cytokinin, Z-Ethylene
  2. X-Cytokinin, Y-Ethylene, Z-ABA
  3. X-Auxin, Y-Cytokinin, Z-ABA
  4. X-Cytokinin, Y-ABA, Z-Ethylene

Solution

Cytokinins induce accumulation of salts inside the cells. Ethylene promotes rapid elongation of leaf bases and internodes in deep water rice plants. As a result, leaves remain above water. Application of minute quantity of abscisic acid to leaves shall reduce transpiration to a great extent through partial closure of stomata. It conserves water and reduces the requirement of irrigation.

Asked in: NEET 2008 (Screening)

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