obsolete senescence true This term was made obsolete because its name is ambiguous and it is covered by more specific terms: 'plant organ senescence ; GO:0090693' and 'cellular senescence ; GO:0090398'. Wikipedia:Senescence GO:0010149 biological_process OBSOLETE. A preprogrammed process associated with the dismantling of an anatomical structure and an overall decline in metabolism. This may include the breakdown of organelles, membranes and other cellular components. An example of this process is found in Arabidopsis thaliana, when older leaves or floral organs are shed. senescence