Assertion: tissue's cell | /r/Synonym | the tunica l1 and l2 layers
Facets:
Source sentences:
text: The epidermal cells of aerial organs arise from the superficial layer of cells known as the tunica (L1 and L2 layers) that covers the plant shoot apex, whereas the cortex and vascular tissues arise from innermost layer of the shoot apex known as the corpus (L3 layer).