Studies plants, say (5)
I believe the answer is:
reads
This could be a double definition.
'studies' is the first definition.
('read' can be a synonym of 'study')
'plants say' is the second definition.
The definition and answer can be both related to thinking as well as being verbs in their -s form.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for reads that I've seen before include "Studies (at university)" , "Looks at and undertsands the written word" , "Understands written language" , "Scans" , "Peruses" .)