subject | relation | object |
---|---|---|
pollen wall | is_a | external encapsulating structure (GO:0030312) |
subject | relation | object |
---|---|---|
pollen aperture (GO:0062074) | BFO:0000050 | pollen wall |
exine (GO:0043668) | BFO:0000050 | pollen wall |
intine (GO:0043678) | BFO:0000050 | pollen wall |