MCQ
Velamen tissue in orchids is found in
- AShoot
- ✓Root
- CLeaves
- DFlowers
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$I.$ Plant body is thallus-like and closely attached to substrate
$II.$ Sporophyte is differentiated into foot, seta and capsule
$III.$ Gemma cup located on the thalli

$R$ : The main stimulus for these quick changes is due to input from the proprioreceptors, which monitor movements of joints and muscles.