subject | relation | object |
---|---|---|
megasporangium exothecium | BFO:0000050 | megasporangium wall (PO:0025308) |
megasporangium exothecium | is_a | exothecium (PO:0030073) |
subject | relation | object |
---|---|---|
nucellar epidermis (PO:0008006) | is_a | megasporangium exothecium |