Fruit with no varieties? (7)
I believe the answer is:
oranges
'fruit' is the definition.
(oranges are a type of fruit)
'with no varieties?' is the wordplay.
'with' is a charade indicator (letters next to each other).
'no' becomes 'O' (O resembles 0).
'varieties?' becomes 'ranges' (I can't explain this - if you can you should believe this answer much more).
'o'+'ranges' is 'ORANGES'.
Can you help me to learn more?
(Other definitions for oranges that I've seen before include "Citrus fruit" , "Navel, blood and Seville are all varieties of these" , "See 8" , "a zesty lot" , "Citrus fruits" .)