MCQ
Sapindales is a
- ASpecies
- BFamily
- ✓Order
- DPhyllum/division
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$R$ : They have respiratory enzymes.
$I$. Species diversity provides stability to the ecosystem
$II$. Communities with more species tends to be more stable than those with less species
$III$. Ecosystem with higher biodiversity are more productive than the ecosystem with lower biodiversity
$IV$. Biodiversity is not essential for the maintenance and health of ecosystem
Choose the correct option

| Column $I$ | Column $II$ |
| $a.$ Ethephon | $(i)$ $GA$ |
| $b.$ Terpene | $(ii)$ Ethylene |
| $c.$ Zeatin | $(iii)$ Natural auxin |
| $d.$ $IAA$ | $(iv)$ Cytokinin |
$R$ : Fibres are absent in secondary phloem.