Test odd bits of pollen, for instance (7)
I believe the answer is:
example
'for instance' is the definition.
(synonyms)
'test odd bits of pollen' is the wordplay.
'test' becomes 'exam' (synonyms).
'odd bits of' means one should take alternating letters.
The alternate letters of 'pollen' are 'ple'.
'exam'+'ple'='EXAMPLE'
(Other definitions for example that I've seen before include "Fact that illustrates a general rule" , "Instance or illustration" , "warning" , "Someone to emulate" , "Illustration or model" .)