Seems dad has turned against fruit (7)
I believe the answer is:
'seems dad' is the definition.
'appears' can be an answer for 'seems' ('appear' can be a synonym of 'seem'). I'm not certain of the 'dad' bit.
'turned against fruit' is the wordplay.
'turned against' becomes 'ap' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'fruit' becomes 'pears' (I've seen this before).
'has' is the link.
Can you help me to learn more?
(Other definitions for appears that I've seen before include "Seems" , "Materialises" , "is exhibited" , "Looks like" , "Comes into view" .)