MCQ
The gametophytic generation in pteridophytes is commonly called
- AThallus
- BPlant body
- ✓Prothallus
- DProtonema
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$I.$ Secondary cortex
$II.$ Autumn wood
$III.$ Secondary phloem
$IV.$ Phellem
$R$ : The main stimulus for these quick changes is due to input from the proprioreceptors, which monitor movements of joints and muscles.